The earth is approx. 6,588,000,000,000,000,000 tons.
175
Iron weighs more after it rusts.
68
Research indicates that plants grow healthier when they are stroked.
173
Nearly 50% of the world's scientists are assigned to military projects.
71
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
In zero gravity, a candle's flame is round and blue.
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