In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
The smell of freshly cut grass is actually a plant distress call.
31
Diamonds can be shattered with a hammer.
-104
Each day, up to 150 species of life become extinct.
-23
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55