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    U.K. Airbus plant converted into coronavirus ventilator factory

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  • See how humpback whales use 'bubble nets' to catch prey

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  • Watch NASA astronauts make history in first all-female spacewalk

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    03:41
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  • A USGS survey found plastic in the Rocky Mountains' rainwater

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  • Chemistry Nobel goes to 3 scientists who developed the lithium-ion batteries

    03:02
  • Physics Nobel goes to 3 scientists who' 'forever changed our conceptions of the world'

    02:09
  • Paralyzed man walks with brain-controlled exoskeleton

    01:09
  • The Interspecies Internet wants to give the animal kingdom the power of communication

    02:09
  • A tectonic plate below the United States seems to be dying

    01:36
  • Watch Elon Musk unveil 'epic' new SpaceX Starship protoype

    00:50
  • Jupiter's strange, volcanic moon Io continues to surprise decades after discovery

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It’s UFO Day! Here’s what we know so far

04:47

It’s UFO day and we still don’t know much about UFOs and extraterrestrial life. From why aliens might be unable to take on space travel to how some life on Earth might have originated from outer space, this is what we know so far about alien life in the universe.