When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
By weight, Bone is five times stronger than steel.
417
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
Our Right Lungs takes more air than our left lung.
194
Unconsciousness will occur after 8-10 seconds after loss of blood supply to the brain.
93