The earth is approx. 6,588,000,000,000,000,000 tons.
175
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
The only letter not appearing on the Periodic Table is the letter "J".
180
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
Sound travels about 4 times faster in water than in air.
408
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
One third of the electricity produced on earth is used to power electric light bulbs!
75