One cubic foot of gold weighs more than 1,200 pounds!
78
In zero gravity, a candle's flame is round and blue.
16
Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15
The storage capacity of human brain exceeds 4 Terrabytes.
140
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57
Out of all the senses, smell is most closely linked to memory.
146
Cold water weighs more than hot water.
93
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5