A cubic yard of air weighs about 2 pounds at sea level.
31
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
The smell of freshly cut grass is actually a plant distress call.
31
Diamonds can be shattered with a hammer.
-104
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20