The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Pure water (H2O) does not conduct electricity on its own.
46
At 15 years old, Jack Andraka invented a method of diagnosing pancreatic cancer, thus helping to save the lives of millions of people around the world. It is 168 times faster, 26,000 times cheaper, 400 times more sensitive, and has a 99% success rate.
15
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
117
