In zero gravity, a candle's flame is round and blue.
16
A cubic yard of air weighs about 2 pounds at sea level.
31
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
Hot water can freeze faster than cold water.
181
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
The smell of freshly cut grass is actually a plant distress call.
31
In 1999, Harvard physicist Lene Hau was able to slow down light to 17 meters per second and in 2001, was able to stop light completely.
39
Each day is longer than the previous on by 0.00000002 seconds which is 13 seconds each century!
116