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realme GT Neo 2 Unboxing & First Impressions ⚡ Snapdragon 870, 120Hz E4 AMOLED, 5000mAh & More

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  • Blue Origin with William Shatner go for launch! Crew gets coin to take to space

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    Blue Origin NS-18 crew William Shatner, Audrey Powers, Chris Boshuizen an d Glen de Vries are presented with a commemorative coin to take with them to space prior to their flight on Oct. 13, 2021. Live Updates:

    Credit: Blue Origin

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  • Self-healing plastic repairs itself in 10 seconds even under water

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    A new type of plastic can rapidly heal itself under water, even in harsh conditions. It maintains its strength after self-healing, so it may be useful in emergencies at sea.

    Lili Chen at Tsinghua University in China and her colleagues developed this material, called Rapid Underwater Self-healing Stiff Elastomer (RUSSE) because most self-healing polymers don’t work very well under water. “Room temperature self-healing polymers generally have a poor underwater stability, low healing strength and a slow healing process,” says Chen.

    RUSSE is made of small chunks of a type of soft polymer used in some paints connected by nanometre-sized chains of a tougher polymer. The researchers tested the material’s properties by stretching it, cutting it and bashing it with a hammer.

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