The bark of an older redwood tree is fireproof.
65
For every gallon of sea water, you get more than a quarter pound of salt.
45
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17
During photosynthesis, plants emit light humans can’t see, but NASA can see that light from space - and they've even made maps of it!
21
One third of the electricity produced on earth is used to power electric light bulbs!
75
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21