Our brains have a negativity bias and will remember bad memories more than good ones.
15
Your thumb is about the same size as your nose.
124
A third of the human population sneezes when they look at the Sun. Light can signal the ocular nerve near the sinuses and triggers a sneeze.
18
On average, there's 100 billion neurons in the human brain.
83
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191
If the human eye was a digital camera, it would have 576 megapixels.
25
Tigers can see 6 times better at night than humans.
305
Babies crawl an average of 200m a day.
212