One cubic foot of gold weighs more than 1,200 pounds!
78
In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Iron weighs more after it rusts.
68
Sound travels about 4 times faster in water than in air.
408
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61