Pain occurs when sounds are above 130 db.
124
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
Every human spent about half an hour as a single cell.
144
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
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
A human brain produces as many as 12,000 to 50,000 thoughts per day, depending on how deep a thinker a person is.
23