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Why We May Be Surrounded by Older Alien Civilizations

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  • Why We May Be Surrounded by Older Alien Civilizations

    33:12

    Are alien civilizations likely to be younger or older than us in age? A basic question that seems insurmountable until we start detecting them. But even before that, we can use some logical deduction using lifetime distribution statistics to determine the most plausible answer to this question. Join us today for an explanation of our new research paper on this topic.

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    Thank-you to Kevin Clark, Tom Widdowson, Denny Smith, Stephanie Hackley, Mark Sloan, Laura Sanborn, Kolos Kantor, Patrick Herman, Abel Aganbegyan, Claudio Bottaccini, Daniel Brunk, Douglas Daughaday, Scott Fincher, James Kindred, Andrew Jones, Jason Allen, Steven Baldwin, Jason Black, Stuart Brownlee, Shivam Chaturvedi, David Denholm, Tim Dorais, Glen Downton, Eneko Xabier, Elizondo Urrestarazu, Gordon Fulton, Sean Griffiths, Peter Halloran, John Jurcevic, Niklas Kildal, Jack Kobernick, Wes Kobernick, Valeri Kremer, Marc Lijoi, Sheri Loftin, Branden Loizides, Anatoliy Maslyanchuk, Blair Matson, Ocean Mcintyre, Laini Mitchell, Jeffrey Needle, André Pelletier, Juan Rivillas, Bret Robinson, Zenith Star, Lauren Steely, Ernest Stefan-Matyus, Mark Steven, Elena West, Barrett York, Tristan Zajonc, Preetumsingh Gowd, Shaun Kelsey, Chuck Wolfred, David Vennel, Emre Dessoi, Fahid Naeem, Francisco Rebolledo, Hauke Laging, James Falls, Jon Adams, Michael Gremillion, Pierce Rutherford, Trev Kline, Tristan Leger, Lasse Skov, Takashi Hanai, Drew Roberts, Erynn Wilson, Ian Baskerville, Jacob Bassnett, John Shackleford, Marcus Undin, Martin Kroebel, Ian Johnstone, Geoff Suter, Ian Hopcraft, James Valdes, Phil Akrill-Misso, William Robertson, Elizabeth Orman & Giles Ingham.

    Video on planet cloaking:

    ::References used::
    ► Kipping, Frank & Scharf, 2020, Contact Inequality -- First Contact Will Likely Be With An Older Civilization, International Journal of Astrobiology:
    ► Benton, M. J., 1993, “The Fossil Record”, Vol 2 (Chapman & Hall, London, 1993)
    ► Civilization lifetimes figure from BBC Future/Nigel Hawtin:

    ► Olson et al., 2014, Survival Probabilities of Adult Mongolian Gazelles, Journal of Wildlife Management, 78, 1:
    ► Battery lifetime figure from BatteryUniversity.com:


    ::Movies clips used::
    ► Master & Commander: The Far Side of the World (2003) 20th Century Fox
    ► Noah (2014) Paramount Pictures
    ► Avatar (2009) 20th Century Fox
    ► Contact (1997) Warnos Bros. Pictures
    ► GI Joe Retaliation (2013) Paramount Pictures
    ► Terminator 3 (2003) Warners Bros. Pictures
    ► The House (2017) Warners Bros. Pictures
    ► X2 (2003) 20th Century Fox
    ► The Pursuit of Happyness (2006) Sony Pictures Releasing
    ► Into The Wild (2007) Paramount Vantage
    ► 300 (2006) Warner Bros. Pictures
    ► Cleopatra (1963) 20th Century Fox
    ► Gladiator (2000) Dreamworks Pictures

    ::TV clips used::
    ► Andrew Marr's History of the World - BBC
    ► Star Trek the Next Generation - Paramount Television

    ::Other video footage used::
    ► See

    ::Music::
    Music used is licensed by SoundStripe.com (SS) [shorturl.at/ptBHI], or via Creative Commons (CC) Attribution License ( or with permission from the artist.
    ► Shade Upon Thy Right Hand by Hill, used with permission from the artist:
    ► Fable by Stephen Keech licensed via SS
    ► Cylinder Five by Chris Zabriskie licensed under a CC Attribution license:
    ► Painted Deserts by Shimmer licensed via SS
    ► It's Always Darkest Before the Dawn by Hill licensed via SS
    ► Cylinder Four by Chris Zabriskie licensed under a CC Attribution license:
    ► We Were Never Meant to Live Here by Chris Zabriskie licensed under a CC Attribution license:
    ► Fragmented by Hill, used with permission from the artist:
    ► Stories About the World That Once Was by Chris Zabriskie licensed under a CC Attribution license:
    ► Waking Up by Atlas licensed via SS
    ► Ticking by Alternative Endings licensed via SS
    ► Trace Correction by Indive licensed under a CC Attribution license:

    0:00 Prologue
    1:22 Technological Lockstep
    6:57 Distribution of Civilization Lifetimes
    19:17 Bayes vs The Cosmos
    23:39 Temporal Bias
    32:20 Credits

    #CivilizationLongevity #AncientAliens #CoolWorlds

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  • Is Alien ‘Life’ Weirder Than We Imagine: Who Is Out There?

    59:56

    If we want to discover alien life out there in the universe, we first need to figure out where to look—and what we're even looking for. Will it be biological like us? Could it be artificial, or take some other form we haven't yet considered? And how do we find something so fundamentally different from ourselves? In this program, scientists devise plans for searching for beings beyond Earth while they grapple with the very definition of life.

    PARTICIPANTS: Lisa Kaltenegger, Caleb Scharf, Susan Schneider, Sara Walker

    MODERATOR: Nicole Stott

    MORE INFO ABOUT THE PROGRAM AND PARTICIPANTS:

    This program is part of the BIG IDEAS SERIES, made possible with support from the JOHN TEMPLETON FOUNDATION.

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    TOPICS:
    - Film about the imaginative search for alien life 00:05
    - Introduction to the program by astronaut Nicole Stott 04:45
    - Introduction of participants 05:50
    - What is the definition of life? 07:09
    - How will we find signs of life elsewhere in the universe? 16:21
    - What are the parameters for looking for life on other planets? 19:36
    - What should the probes on Mars be looking for to find life? 24:58
    - The Fermi Paradox, where is everybody? 30:56
    - Have aliens avoided humans because we're too boring? 34:41
    - Can we use information theory to look for life in the universe? 39:13
    - Why is looking for alien life important to humankind? 44:13
    - Will life in the future be AI, should we be looking for other AI in space? 46:02
    - The Great Filter 48:52
    - Is artificial intelligence alive? 50:28
    - Is evolution the strongest force in the universe, how will it shape the future? 52:13
    - What lessons could humankind learn from the successes and failures of other alien species in the universe? 56:58
    - Why should we care about finding life elsewhere in the universe? 57:58


    PROGRAM CREDITS:

    - Produced by John Plummer
    - Associate Produced by Laura Dattaro
    - Opening film written / produced by John Plummer, animation by Derek Breur
    - Music provided by APM
    - Additional images and footage provided by: Getty Images, Shutterstock, Videoblocks

    This program was recorded live at the 2018 World Science Festival and has been edited and condensed for YouTube.

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  • Was There An Advanced Civilization Before Humans? | Answers With Joe

    21:55

    Get 20% off your first order when you use the promo code joescott at
    It took humans 10,000 years to go from hunter-gatherers to world domination. Considering the vastness of time that humans and life have been on Earth, could this have happened once before?

    This question was put forth by Adam Frank and Gavin Schmidt in their paper titled The Silurian Hypothesis, where they tried to figure out what in the geologic record would be a sign of a previous industrial civilization. It brings up a lot of questions and makes you deal with the weight of deep time, as well as the fleeting nature of history.

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    Zanclean flood animation

  • What Do Alien Civilizations Look Like? The Kardashev Scale

    11:41

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    The observable universe is a big place that has been around for more than 13 billion years. Up to two trillion galaxies made up of something like 20,000 billion billion stars surround our home galaxy. In the milky way alone scientists assume there are some 40 billion earth like planets in the habitable zone of their stars. When we look at these numbers it is hard to imagine that there is nobody else out there.


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  • Why Cant We See Evidence of Alien Life?

    6:04

    Stand by for an animated exploration of the famous Fermi Paradox. Given the vast number of planets in the universe, many much older than Earth, why haven't we yet seen obvious signs of alien life? The potential answers to this question are numerous and intriguing, alarming and hopeful.

  • What If We Are Not the First Advanced Civilization on Earth?

    4:36

    It's no secret that humans are the Earth's most dominant species. And, without proof of life anywhere else in the Universe, we can probably consider ourselves the most dominant species in space too.

    But what if there were others just like us millions of years ago? How do we even know that we're the first advanced civilization to call planet Earth home? And, if there have been others, what kind of traces have they left for us to find?

    Transcript and sources:

    What If asks some of the most provocative hypothetical questions in science — and then tries to answer them with the help of established scientific theory and the latest research.

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  • Alien life on Earth | Outsiders | VPRO Documentary

    14:00

    Meet Anton (70), who is certain that we're regularly being visited by alien life. With presenter Tim they go searching for UFO's and aliens.

    When Anton was 23 years old, he saw some noiseless orbs skimming over him in the sky . Since then he has seen such apparitions more often and is convinced that there are aliens on Earth. He has even spoken to one - after all, many aliens have human forms. Anton is charting where and when the creatures appear on Earth.

    Part of a series called 'The Outsiders', about people who consciously choose to live off the beaten path. What do the stories of these and other outsiders say about the way most of us live?

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  • Intelligent Life on Other Planets: What are the Odds?

    53:23

    Title: Intelligent Life on Other Planets: What are the Odds?
    Speaker: Corbin Covault, PhD
    Date: October 29, 2019

  • The Hidden World Beneath the Antarctic Ice Sheet | John Priscu | TEDxBozeman

    11:19

    Following more than a decade of international and national planning and an intense week of on-ice weather delays, Priscu led the field team successfully drilled through the overlying ice sheet and sampled directly the waters and sediments of a lake hidden beneath the Antarctic ice sheet. The groundbreaking exploration of Antarctica's subglacial environment marks the beginning of a new era in polar science, opening the window for future interdisciplinary scientific investigations of one of Earth's last unexplored frontiers.

  • x
  • The story of Oumuamua, the first visitor from another star system | Karen J. Meech

    13:25

    In October 2017, astrobiologist Karen J. Meech got the call every astronomer waits for: NASA had spotted the very first visitor from another star system. The interstellar comet -- a half-mile-long object eventually named `Oumuamua, from the Hawaiian for scout or messenger -- raised intriguing questions: Was it a chunk of rocky debris from a new star system, shredded material from a supernova explosion, evidence of alien technology or something else altogether? In this riveting talk, Meech tells the story of how her team raced against the clock to find answers about this unexpected gift from afar.

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    The TED Talks channel features the best talks and performances from the TED Conference, where the world's leading thinkers and doers give the talk of their lives in 18 minutes (or less). Look for talks on Technology, Entertainment and Design -- plus science, business, global issues, the arts and more.

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  • How Far Can We Go? Limits of Humanity

    7:45

    Is there a border we will never cross? Are there places we will never be able to reach, no matter what? It turns out there are. Far, far more than you might have thought…

    Check out Ethan Siegels Astronomy blog, starts with a bang:

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    How Far Can We Go? Limits of Humanity.

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  • No Human Has Ever Left Earth’s Atmosphere, Heres Why

    5:10

    New observations of our atmosphere calculate that it extends far beyond what we thought, encompassing the moon! This means that we've actually never left Earth's atmosphere. Here's what else these observations can tell us.

    A Dead Satellite Is Unlocking The Secrets Lurking Beneath Antarctica -

    Read More:
    Earth's Atmosphere Stretches Out To The Moon - And Beyond

    The new study revealed that sunlight compresses hydrogen atoms in the geocorona on Earth’s dayside, and also produces a region of enhanced density on the night side. The denser dayside region of hydrogen is still rather sparse, with just 70 atoms per cubic centimeter at 60 000 kilometers above Earth’s surface, and about 0.2 atoms at the Moon’s distance.

    The edge of space: Revisiting the Karman Line

    A number of these authors suggest that the large variations with time of atmospheric properties make it futile to locate a true boundary of space based on physical arguments. In this paper I will argue the contrary: there is a moderately-well-defined boundary of space, it coincides with the Karman line as originally defined, and that line is close to 80 km, not 100 km.

    Exosphere - overview

    Not all scientists agree that the exosphere is really a part of the atmosphere. Some scientists consider the thermosphere the uppermost part of Earth's atmosphere and think that the exosphere is really just part of space. However, other scientists do consider the exosphere part of our planet's atmosphere.

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  • TRUE Limits Of Humanity – The Final Border We Will Never Cross

    11:41

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    The original Limits of Humanity:

    Is there a border we will never cross? Are there places we will never reach, no matter how hard we try? It turns out, there are. Even with sci-fi technology, we are trapped in a limited pocket of the Universe and the finite stuff within it. How much universe is there for us and how far can we go?

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  • NASA reports seeing the 1st confirmed alien object to enter Earths solar system

    3:16

    NASA: Scientists were surprised and delighted to detect --for the first time-- an interstellar asteroid passing through our solar system. Additional observations brought more surprises: the object is cigar-shaped with a somewhat reddish hue. The asteroid, named ‘Oumuamua by its discoverers, is up to one-quarter mile (400 meters) long and highly-elongated—perhaps 10 times as long as it is wide. That is unlike any asteroid or comet observed in our solar system to date, and may provide new clues into how other solar systems formed.

  • Have 36 Alien Civilizations Colonized The Milky Way? | Unveiled

    9:55

    A new study suggests that there are 36 alien civilisations LIVING IN THE MILKY WAY. In this video, Unveiled discovers just how close to alien life we might finally be... with scientists proposing that there are communicating, extraterrestrial species in our own galaxy! What do you think... Has the Milky Way already been colonized by alien life??

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    #Aliens #MilkyWay #CETI #SETI #Space #SolarSystem #Science

  • The Strangest Encounters in Space | NASAs Unexplained Files

    43:05

    Strange flying objects have been caught on NASA’s cameras and astronauts have reported seeing UFOs. Some can be identified; others remain a mystery. We’ll reveal NASA footage and interview the astronauts and scientists.

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  • Ancient Aliens: SECRET UNDERWATER ALIEN BASE FOUND | History

    4:23

    Watch all new episodes of Ancient Aliens, returning soon, and stay up to date on all of your favorite History Channel shows at

    Documented eyewitness accounts of strange UFO activity at the Solomon Islands has led to a theory that an underwater alien base is present, in this clip from Season 6, Aliens and Forbidden Islands. #AncientAliens
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    Ancient Aliens explores the controversial theory that extraterrestrials have visited Earth for millions of years.

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  • Ancient Aliens: Lost Race of Biblical Giants Uncovered | History

    5:08

    Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to date on all of your favorite History Channel shows at

    Ancient Astronaut Theorists have found evidence of a lost race of giants who resulted from a mixture between extraterrestrials and humans, in this clip from Season 16, Giants of the Mediterranean. #AncientAliens
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  • UFO Hunters: Alien Surveillance at Secret Government Facilities | Full Episode | History

    44:43

    Ever since Roswell, observers have noted that UFOs allegedly appear in locations that are already full of secrets and mystery: namely, weapons labs. The question is, why? Find out in Season 3, Episode 9, UFO Surveillance. #UFOHunters

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    UFO HUNTERS follows the team of Bill Birnes, Kevin Cook and Pat Uskert, as they investigate UFO cases around the world. The team’s access to UFO evidence is unparalleled—and their expertise allows them to quickly identify bogus claims of UFOs. Together, they use eyewitness accounts, scientific experimentation, documents recently released through the Freedom of Information Act and footage that has never been seen on television to piece together compelling—and sometimes chilling—evidence of UFO phenomena.

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  • Why Earth Is A Prison and How To Escape It

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    We are trapped on earth. Controlled by an ancient debt to the universe...

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  • UFO Hunters: Underwater Alien Bases Located | Full Episode | History

    44:20

    Join Lawrence Fishburne as he uncovers the truth behind the strangest mysteries of all time in History’s Greatest Mysteries: Solved -

    On November 11th 1987, the small town of Gulf Breeze, Florida is inundated with UFO sightings. More than 200 witnesses see strange, unexplained lights in the sky. Find out more in Season 3, Episode 4, Underwater Alien Bases. #UFOHunters

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    UFO HUNTERS follows the team of Bill Birnes, Kevin Cook and Pat Uskert, as they investigate UFO cases around the world. The team’s access to UFO evidence is unparalleled—and their expertise allows them to quickly identify bogus claims of UFOs. Together, they use eyewitness accounts, scientific experimentation, documents recently released through the Freedom of Information Act and footage that has never been seen on television to piece together compelling—and sometimes chilling—evidence of UFO phenomena.

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  • Apollo 11’s ‘third astronaut’ reveals secrets from dark side of the moon | 60 Minutes Australia

    13:11

    This year marks the 50th anniversary of that remarkable feat of technology and daring. And while the moonwalkers, Neil Armstrong and Buzz Aldrin, dominate our memories of the moon landing, there’s a third astronaut who deserves his place in history. Michael Collins piloted the Apollo 11 command module spacecraft in lunar orbit while his two colleagues collected moon rocks. In a rare interview he tells Sarah Abo if it wasn’t for him, one of our greatest successes would have been a monumental failure.

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    For forty years, 60 Minutes have been telling Australians the world’s greatest stories. Tales that changed history, our nation and our lives. Reporters Liz Hayes, Allison Langdon, Tara Brown, Charles Wooley, Liam Bartlett and Sarah Abo look past the headlines because there is always a bigger picture. Sundays are for 60 Minutes.

    #60MinutesAustralia

  • UFO Hunters: Unspoken Secrets of Area 51 | Full Episode | History

    43:05

    Join Lawrence Fishburne as he uncovers the truth behind the strangest mysteries of all time in History’s Greatest Mysteries: Solved -

    On October 26, 1994, the U.S. government made their first official acknowledgment of Area 51. Six months later, nearly 4,000 acres of previously public land surrounding the base were closed, in Season 2, Episode 13, Area 51 Revealed. #UFOHunters

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    UFO HUNTERS follows the team of Bill Birnes, Kevin Cook and Pat Uskert, as they investigate UFO cases around the world. The team’s access to UFO evidence is unparalleled—and their expertise allows them to quickly identify bogus claims of UFOs. Together, they use eyewitness accounts, scientific experimentation, documents recently released through the Freedom of Information Act and footage that has never been seen on television to piece together compelling—and sometimes chilling—evidence of UFO phenomena.

    HISTORY® is the leading destination for award-winning original series and specials that connect viewers with history in an informative, immersive, and entertaining manner across all platforms. The network's all-original programming slate features a roster of hit series, premium documentaries, and scripted event programming.

  • Avi Loeb: The First Interstellar Visitor to Earth

    59:19

    In late 2017, scientists at a Hawaiian observatory glimpsed an object soaring through our inner solar system, moving so quickly that it could only have come from another star. That begs the question: what exactly was that object?

    Harvard’s top astronomer Avi Loeb joins us via livestream to share his theory: that the object was the first confirmed interstellar visitor to be spotted in our solar system. With insight from his book Extraterrestrial: The First Sign of Intelligent Life Beyond Earth, he explains all of the reasons the object couldn’t have been an asteroid, and why he believes it was a piece of advance technology created by a distant alien civilization. He further outlines his controversial theory, and explores the implications: for science, for religion, and for the future of our species and our planet. Join us as we aim for the stars with this thrilling discussion, where Loeb asks us to think big and to expect the unexpected.

    Abraham (Avi) Loeb is the Frank B. Baird, Jr., Professor of Science at Harvard University, chair of Harvard's Department of Astronomy, founding director of Harvard's Black Hole Initiative, and director of the Institute for Theory and Computation (ITC) within the Harvard-Smithsonian Center for Astrophysics. He also chairs the Advisory Committee for the Breakthrough Starshot Initiative, serves as the science theory director for all Initiatives of the Breakthrough Prize Foundation, as well as chair of the Board on Physics and Astronomy of the National Academies. Author of four books and over 700 scientific papers, Loeb is an elected fellow of the American Academy of Arts & Sciences, the American Physical Society, and the International Academy of Astronautics.

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  • How Rome Conquered Greece - Roman History DOCUMENTARY

    2:6:45

    Get your SPECIAL OFFER for MagellanTV here: It's an exclusive offer for our viewers! Start your free trial today. MagellanTV is a new kind of streaming service run by filmmakers with 3,000+ documentaries! Check out our personal recommendation and MagellanTV’s exclusive playlists:

    Kings and Generals animated historical animated documentary series on the history of ancient Roman and ancient Greek history continue with a video explaining how Rome conquered Greece. In this video, we will cover the first Roman intervention into Greece during the First Macedonian War, followed by the Second Macedonian War, Seleucid War, Aetolian War, Third Macedonian War, Fourth Macedonian War, and the Achaean War, featuring famous battles like Pydna, Cynoscephalae, Aous, Magnesia, Thermopylae, Callinicus, and the prominent generals like Titus Quinctius Flamininus, Philip V, Perseus, Eumenes II, Antioch III, Hannibal, Publius Cornelius Scipio Africanus,
    Lucius Cornelius Scipio Asiaticus and others.

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    The video was made by MalayArcher ( while the script was researched and written by Matt Hollis. This video was narrated by Officially Devin (

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  • Why are these 32 symbols found in caves all over Europe | Genevieve von Petzinger

    12:06

    Written language, the hallmark of human civilization, didn't just suddenly appear one day. Thousands of years before the first fully developed writing systems, our ancestors scrawled geometric signs across the walls of the caves they sheltered in. Paleoanthropologist and rock art researcher Genevieve von Petzinger has studied and codified these ancient markings in caves across Europe. The uniformity of her findings suggest that graphic communication, and the ability to preserve and transmit messages beyond a single moment in time, may be much older than we think.

    TEDTalks is a daily video podcast of the best talks and performances from the TED Conference, where the world's leading thinkers and doers give the talk of their lives in 18 minutes (or less). Look for talks on Technology, Entertainment and Design -- plus science, business, global issues, the arts and much more.
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  • New pattern of mysterious radio signals detected from space

    2:13

    The Canadian Hydrogen Intensity Mapping Experiment (CHIME), a powerful new telescope located near Penticton, B.C., has uncovered a pattern of radio signals blasting out from about 500 million light years from Earth. It's a scientific first. And as Eric Sorensen reports, now the question is: Who or what is sending them?

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    #Space #GlobalNews

  • What If Earth got Kicked Out of the Solar System? Rogue Earth

    9:46

    To get a fresh perspective on science, go to and sign up free. And there’s an extra perk for kurzgesagt viewers: the first 200 people to use the link get 20% off their annual membership, which lets you view all the daily problems in the archives and unlock every course. Thanks to our friends from Brilliant for supporting this channel.

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    The night sky seems peaceful and orderly. But in reality, stars are careening through the galaxy at speeds of hundreds of thousands of kilometres per hour. Not bound by static formations but changing neighbourhoods constantly. Fortunately space is big, and so the stars of the Milky Way are very unlikely to hit us. Unfortunately, they don’t have to hit anything to make us have a really bad time on earth. And there are already stars starting to get very close.

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  • The most mysterious star in the universe | Tabetha Boyajian

    13:47

    Something massive, with roughly 1,000 times the area of Earth, is blocking the light coming from a distant star known as KIC 8462852, and nobody is quite sure what it is. As astronomer Tabetha Boyajian investigated this perplexing celestial object, a colleague suggested something unusual: Could it be an alien-built megastructure? Such an extraordinary idea would require extraordinary evidence. In this talk, Boyajian gives us a look at how scientists search for and test hypotheses when faced with the unknown.

    TEDTalks is a daily video podcast of the best talks and performances from the TED Conference, where the world's leading thinkers and doers give the talk of their lives in 18 minutes (or less). Look for talks on Technology, Entertainment and Design -- plus science, business, global issues, the arts and much more.
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  • The Universe: Astrobiology & Life in Space | Full Episode | History

    44:26

    Join us as we highlight the trends that have defined us from the 1920s to now in History by the Decade -

    Does life exist on other planets? Astrobiology is a visionary new science that searches for life in space by combining the disciplines of astronomy, biology and geology. How did life evolve on Earth? Find out in Season 2, Episode 7, Astrobiology. #TheUniverse
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  • Blood Type and COVID-19: There May Be Something Here

    4:48

    As you're here on YouTube, you may want to watch How Social Media Hacks Your Brain --~--
    COVID-19 patients with blood type A seem to be at higher risk. The question is why?

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  • The Stone Age Tribe on a Banned Island You Cant Visit

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    Videos explaining things. Mostly over topics like history, geography, economics and science.

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  • UFO Hunters: Aliens Spotted at Chicago Airport | Full Episode | History

    43:50

    Do you love investigations into the unknown? Make sure to check out our new channel @TheUnXplainedZone, your portal to the paranormal. Click here to SUBSCRIBE!

    Join Lawrence Fishburne as he uncovers the truth behind the strangest mysteries of all time in History’s Greatest Mysteries: Solved -

    There are approximately 30,000 commercial flights in the United States every day, and as the number of flights increase, so does the proximity of UFO encounters. See more in Season 2, Episode 11, Aliens at the Airport. #UFOHunters
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    UFO HUNTERS follows the team of Bill Birnes, Kevin Cook and Pat Uskert, as they investigate UFO cases around the world. The team’s access to UFO evidence is unparalleled—and their expertise allows them to quickly identify bogus claims of UFOs. Together, they use eyewitness accounts, scientific experimentation, documents recently released through the Freedom of Information Act and footage that has never been seen on television to piece together compelling—and sometimes chilling—evidence of UFO phenomena.

    HISTORY® is the leading destination for award-winning original series and specials that connect viewers with history in an informative, immersive, and entertaining manner across all platforms. The network's all-original programming slate features a roster of hit series, premium documentaries, and scripted event programming.

  • How the Pyramids Were Built

    7:04

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    You asked for it, so here’s the follow-up!
    Just because something is difficult doesn’t mean it’s impossible. Over the past centuries, archaeologists, historians, and engineers have reconstructed a great deal of the technology and science used to build the Egyptian pyramids. This week we look at ancient Egyptian mathematics, building techniques, tools, and culture to reconstruct the Great Pyramid’s construction.

    REFERENCES:

    Fall, Abdoulaye, et al. Sliding friction on wet and dry sand. Physical review letters 112.17 (2014): 175502.

    Lehner, M. (1997). The complete pyramids. Thames and Hudson.

    Parry, D. (2005). Engineering the pyramids. The History Press.

    Smith, Craig B., Zahi Hawass, and Mark Lehner. How the great pyramid was built. Harper Collins, 2006.

    Verner, M. (2003). The pyramids: their archaeology and history. Atlantic.

    Verner, M. (2007). The Pyramids: The Mystery, Culture, and Science of Egypt's Great Monuments. Grove/Atlantic, Inc..


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  • TOP 10 SECRETS OF ANCIENT EGYPT | History

    13:03

    An incredible empire for thousands of years, Egypt was one of the most important civilization in the ancient world. Watch as we count down the top 10 secrets, from the Great Sphinx to King Tut's tomb, that have shaped our understanding of ancient Egypt, in this episode of Ancient Top 10.

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  • Artifacts That PROVE Past Advanced Civilizations Existed

    11:47

    Some artefacts and places found around the world are highly unusual. Coming up are some mysterious objects. From ancient computers, to mind-bendingly-old temples, these discoveries will have you questioning everything about human history.
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  • Proof of evolution that you can find on your body

    3:55

    You have your mom's smile, your dad's eyes, and the ear muscles of a Triassic mammal.

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    Vestigial structures are evolution's leftovers — body parts that, through inheritance, have outlived the context in which they arose. Some of the most delightful reminders of the common ancestry we share with other animals, they show that the building blocks of the human body predate our species by hundreds of millions of years.

    Forty-two percent of Americans say that humans were created in their present form within the past 10,000 years — a percentage that hasn't changed much since 1982, when Gallup started polling views on evolution.

    Several lines of evidence, from the fossil record, comparative anatomy, and genetics, tell another story. But you don't have to read all the research to find signs of our evolutionary history — you can see it in the vestigial structures in each of our bodies, like the third molars that no longer fit in our mouths. For a few other examples, check out the video above.

    Vox.com is a news website that helps you cut through the noise and understand what's really driving the events in the headlines. Check out

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  • What Was The Indus Valley Civilisation?

    17:55

    Sign up for an annual CuriosityStream subscription and you'll also get free access to Nebula (a new streaming platform I'm helping to build along with other creators). Use my promo code when signing up to get a 30-day free trial:

    In British India in the 1920's odd stone seals kept popping up at ruins near Harappa and Mohenjo-Daro along the Indus river valley. They baffled everyone, with their inscriptions in a never before seen written language. Archaeologists, intrigued by this, started excavating these previously ignored sites.

    They soon uncovered a 4,500-year-old civilisation. A civilisation completely absent in the historical record. One of the earliest urban civilizations in human history. It flourished alongside Ancient Egypt, Mesopotamia, and China around 3300-1900BCE but was bigger than all of them. A civilisation that built wonders not to gods or kings but to sanitation. A civilisation without war. Made up of massive planned cities built in brick. Masters of bronze and sculpture. They created their own writing system, traded across the vast sea, and possibly invented the world’s first indoor toilets and then vanished for reasons still not understood.

    So what was this civilisation in the Indus Valley, what did they achieve, and what does it have to do with rubber duckies? Well let’s find out.

    Head to to learn more!


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    What Is Judaism |
    History Of Ancient China | Dynasties, Confucius, And The First Emperor
    Who Are The San Bushmen? |
    What Is Jainism?
    Who Are The Berbers Of North Africa
    What Is Hinduism?
    What Is Sikhism?


    Sources:

    Understanding Ancient Civilizations Jane R. McIntosh - The ancient Indus Valley new perspectives -
    A population history of India - From the First Modern People to the Present Day by Tim Dyson -
    A History of Ancient and Early Medieval India From the Stone Age to the 12th Century by Upinder Singh -
    India’s Ancient Past by R.S. Sharma -
    An Environmental History of India From Earliest Times to the Twenty-First Century by Fisher, Michael H -
    The Lost River On the trail of Saraswati by Michel Danino -
    The Indus Civilization by Irfan Habib -
    The Cambridge history of India Suppl. vol. The Indus Civilization by Mortimer Wheeler
    Climate change and the course of global history a rough journey by John L Brooke -
    The Indus Civilization: A Contemporary Perspective by Gregory L. Possehl -
    Allchin, Bridget, and Raymond Allchin The Rise of Civilization in India and Pakistan -
    Bellwood, Peter First Farmers: The Origins of Agricultural Societies -















    Belcher, William R. 1997. “Ancient Harappa in 3-D.”
    Kenoyer, Jonathan Mark. 1996. “Around the Indus in 90 Slides.”

    All images are taken from Creative Commons or used in accordance with fair use. If one of your images has been used and I have forgotten to attribute please contact me by email or on twitter I will instantly resolve that.

    #Indus #AncientHistory #IndianHistory

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  • What If Were the Remnants of a Type III Civilization? | Unveiled

    9:33

    What if the Kardashev Scale is right, but we're the SECOND variation of it? Join us... and find out!

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    In this video, Unveiled takes an alternate look at the Kardashev Scale model of civilization advancement. On Kardashev's original scale, Type III was the pinnacle... but what if it's already been and gone on Earth? Could humans simply be the LEFTOVERS of an ancient, advanced race of super-intelligent beings?

    This is Unveiled, giving you incredible answers to extraordinary questions!

    Find more amazing videos for your curiosity here:
    4 Reasons Why We're Probably Surrounded by Aliens -
    What Is NASA Hiding? -

    0:00 Start
    0:44 Kardashev Scale
    2:05 Type III Civilization
    3:32 Exploring Ancient History
    6:00 Type III Aliens
    8:10 Conclusions

    #Space #Kardashev #Humanity

  • Over Wyoming

    58:28

    WyomingPBS takes cameras aloft to explore the sweeping beauty of the Cowboy State and finds etched on the land, history as vast as its horizons and human stories as intricate as its streams. Narrated by Pete Simpson.

  • 4 Reasons Were Probably Surrounded By Alien Civilizations | Unveiled

    8:41

    We're probably not alone in the galaxy... Join us... and find out why!

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    The search for alien life could soon be over! According to multiple studies, we should be surrounded by alien civilizations on other, distant planets... it's just a matter of time until we work out how to spot them! In this video, Unveiled looks at 4 reasons why the Milky Way should be full of aliens! What do you think... is anybody out there?

    This is Unveiled, giving you incredible answers to extraordinary questions!

    0:00 Start
    0:41 The Commonality of Life in the Universe
    1:48 Alien Exoplanets
    3:32 Time and the Temporal Habitable Zone
    5:44 Humans Aren't Intelligent Enough - The Great Filter
    8:02 Conclusions

    Find more amazing videos for your curiosity here:
    Are We Living in the Dark Forest? -
    Are There Ancient Humans Living in the Milky Way? -

    #AlienLife #Aliens #SETI

  • Is This Why We Haven’t Found Alien Civilizations? | STELLAR

    9:47

    Thank you to Draper and its Hack the Moon initiative for supporting PBS Digital Studios | Learn more at
    Physics Girl explores how We’ll Find the Aliens in Our Solar System!


    Looking up at the stars makes you wonder: what and who is out there? And why haven’t we seen any other intelligent civilizations given the vast size and age of the universe? They’re complicated questions and although we haven’t met any other space-faring species we do have a way of calculating just how many alien civilizations might be out there as well as some rather frightening ideas as to why we might not have met them.

    This video is a bit different from most It's Okay To Be Smart videos. It's part of a new PBS miniseries called STELLAR, done in collaboration with Matt O’Dowd from PBS Space Time and Dianna Cowern from Physics Girl. Over six episodes we travel to telescopes, go inside space research centers, and chat with amazing scientists to bring you the most exciting stories about space.

    **I figure out how we took a picture of a Black Hole with a telescope the size of Earth


    **Matt O’Dowd exploring the oldest quasar ever seen at the Gemini Telescope:

    **Physics Girl visits LIGO to learn about gravitational waves:


    You'll be able to see future episodes on the Physics Girl, Space Time and It’s Okay to be Smart YouTube channels, as well as the PBS Digital Studios Facebook page.

    Stellar is a part of the PBS Summer of Space. They'll be lots of awesome space related content all summer long on PBS. See what's happening at

    #SummerOfSpacePBS #astrophysics #space

    Hosted by Joe Hanson
    Written by: Joe Hanson, Andrew Kornhaber, Eric Brown
    Directed by: Eric Brown and Andrew Kornhaber
    Producer: Randa Eid
    Director of Photography: Eric Brouse
    Sound: Tobi Nova
    Production Assistant: Anna Bosketti
    Editing: Pavel Ezrohi
    Graphics: Murilo Lopes
    Assistant Editing: Daniel Sircar
    Produced By: Kornhaber Brown

  • The truth is out there: The Milky Way could be home to 36 alien civilisations, say scientists

    2:00

    Scientists calculate there could be three dozen intelligent civilisations in our galaxy capable of communicating with us.

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  • Why Extraterrestrial Life Might Not Be So Alien

    4:26

    On the website for the department of zoology of the University of Cambridge, the page for Arik Kershenbaum lists his three main areas of research, one of which stands out from the others. Kershenbaum studies “Wolves and other canids,” “Dolphins and cetaceans” — and “Aliens.” Granted, science hasn’t yet found any aliens to study, but Kershenbaum says that there are certain things we can still say about them with reasonable certainty. Topping the list: They evolved. Read the full article at Quanta Magazine:

  • Should Humans Try to Contact Alien Civilizations?

    7:12

    Learn about the subterranean worms hinting towards life on Mars:

    Doug Vakoch is a former SETI member who founded METI International in 2015, an organization trying to craft and send targeted interstellar messages to extraterrestrials. However, his work has become the center of an international debate on whether humans should try to actively contact other lifeforms without global consensus.

    In the third episode of Exo, Motherboard goes to San Francisco to meet with Doug, and to hear from those who think his project is dangerous.

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    Tracking Bacteria on the Space Station Could Help Us Survive Beyond Earth:

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  • Frontiers in Artifact SETI: Waste Heat, Alien Megastructures & Tabbys Star - Jason Wright

    1:4:05

    In 1960 two seminal papers in SETI were published, providing two visions for SETI. Giuseppe Cocconi and Philip Morrison’s proposed detecting deliberate radio signals (communication SETI), while Freeman Dyson (artifact SETI), proposed detecting the inevitable effects of massive energy supplies and artifacts on their surroundings. While communication SETI has now had several career-long practitioners, artifact SETI has, until recently, not been a vibrant field of study.

    The launch of the Kepler and WISE satellites have greatly renewed interest in the field, however, and the recent Breakthrough Listen Initiative has provided new motivation for finding good targets for communication SETI. Dr. Wright will discuss the progress of the Ĝ Search for Extraterrestrial Civilizations with Large Energy Supplies, including its justification and motivation, waste heat search strategy and first results, and the framework for a search for megastructures via transit light curves. The last of these led to the identification of KIC 8462852 (a.k.a. Tabby's Star) as a candidate ETI host. This star, discovered by Boyajian and the Zooniverse Planet Hunters, exhibits several apparently unique and so-far unexplained photometric properties, and continues to confound natural explanation.

  • Searching for Kardashev Type II and III Civilizations with WISE

    57:20

    SETI Institute researchers Jill Tarter and Franck Marchis (host & moderator) will hangout with Jason Wright, professor of astronomy at Penn State, Matt Povich, professor of astronomy at Cal Poly Pomona and Freeman Dyson, theoretical physicist and mathematician at the Institute for Advance Study.

    These scientists will discuss the potential for the WISE telescope to detect extraterrestrial super-civilizations that acquired a large energy supply by building a mega-structure to harvest the energy of their star(Dyson Sphere) or their entire galaxy.

    #SETIChat #SETIHangout

  • Mars rover begins search for alien life on Red Planet - BBC News

    3:53

    NASA has successfully landed a new rover on Mars, in the most ambitious mission yet to the planet.

    After a seven month journey through space, the rover called Perseverance survived a perilous high-speed plunge through the Martian atmosphere and made it safely down to the surface of the red planet, confirming its arrival with a tweet.

    It's the most advanced rover ever sent to another planet and it’s hoped it will eventually return samples to Earth. Its mission is to search for ancient life that may have existed billions of years ago.

    Sophie Raworth presents BBC News at Ten reporting by science correspondent Rebecca Morelle.

    Please subscribe HERE

    #BBCNews

  • The Dawn of Olmec Civilization

    53:28

    2021 Eduardo Matos Moctezuma Lecture Series

    Ann Cyphers, Archaeologist, Institute of Anthropological Research, National Autonomous University of Mexico

    The hearth of Olmec civilization is located in the tropical lowlands of Mexico’s southern Gulf Coast region, in the majestic archaeological site of San Lorenzo. The inhabitants of this first Olmec capital developed a distinctive geo-political territory and managed complex trade systems. The Olmec also created spectacular earthen architecture and magnificent stone sculpture—including the famous Colossal Heads—that reflect their stratified social organization and centralized political system backed by religion and directed by hereditary rulers. Building on the pioneering work of Matthew Stirling in the 1940s and Michael Coe in the 1960s, Ann Cyphers will discuss recent investigations at San Lorenzo that shed new light on the dawn of Olmec civilization almost 4,000 years ago.

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