A cubic yard of air weighs about 2 pounds at sea level.
31
According to scientists, the color of the cup that we're drinking from can alter our perception of the actual taste of the drink.
12
Columbia University has developed an artificial tree that passively soaks up carbon dioxide from the air using "leaves" that are 1,000 times more efficient than true leaves that use photosynthesis.
15
In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17
4.5 pounds of sunlight strike the Earth each day.
27
In zero gravity, a candle's flame is round and blue.
16
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
The gas that gives rotten eggs their distinctive foul smell may slow ageing and block damaging chemical reactions inside cells, according to scientists in China.
5