Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
The bark of an older redwood tree is fireproof.
65
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
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
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
Nearly 50% of the world's scientists are assigned to military projects.
71
A cubic yard of air weighs about 2 pounds at sea level.
31