It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
Research has determined that most people are happiest at 7:26pm on a Saturday night.
69
Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24
Cats have a weak sense of taste. They have only 473 tastebuds, humans have 9,000.
307
The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13
Your thumb is about the same size as your nose.
124
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
The world's shortest man measures only 21.5 inches.
73