The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
Aluminum used to be more valuable than gold!
84
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
Liquid TIDE laundry detergent glows under a blacklight.
96
Sound travels fifteen times faster through steel than through air.
134
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
Sound travels about 4 times faster in water than in air.
408