The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
Cats have a weak sense of taste. They have only 473 tastebuds, humans have 9,000.
307
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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You forget 90% of your dreams.
256
On average a woman has 4 sexual partners in her lifetime.
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