The earth is approx. 6,588,000,000,000,000,000 tons.
175
Balsa wood is classified as a hard wood!
41
Scientists aren't sure what color dinosaurs were.
312
Sound at the right vibration can bore holes through a solid object.
134
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
In zero gravity, a candle's flame is round and blue.
16
Out of all the senses, smell is most closely linked to memory.
146