By weight, Bone is five times stronger than steel.
417
Most of us have microscopic, worm like mites named Demodex that live in our eyelashes and have claws and a mouth.
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There are about 255 babies born worldwide every minute.
46
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13