One ragweed plant can release as many as one billion grains of pollen!
51
During photosynthesis, plants emit light humans can’t see, but NASA can see that light from space - and they've even made maps of it!
21
Sound at the right vibration can bore holes through a solid object.
134
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
Some toothpastes and deodorants contain the same chemicals found in antifreeze.
38
No matter how cold it gets, gasoline will not freeze.
107