Our brains have a negativity bias and will remember bad memories more than good ones.
15
We share 70% of our DNA with a slug.
218
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
Our eyes are always the same size from birth, but our nose and ears never stop growing.
269
