Following his work on the world's smallest tiny house, YouTuber Levi Kelly is back with another exercise in extreme downsizing. This time, he’s created what he calls the world's smallest mobile tiny ...

Deep within the dense foliage of Papua New Guinea lives the world's smallest vertebrate. Meet Paedophryne amauensis, a terrestrial frog so small it's nearly invisible to the naked eye. Not only do ...

The world’s tiniest pacemaker — smaller than a grain of rice — could help save babies born with heart defects, say scientists. The miniature device can be inserted with a syringe and dissolves after ...

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See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Scientists in the United Kingdom have made what may be the world's ...