A ball of glass will bounce higher than a ball made of rubber.
73
Iron weighs more after it rusts.
16
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
If you blowtorch Pepto-Bismol, you would get a hunk of metal.
114
Scientists aren't sure what color dinosaurs were.
312
Most liquid laundry detergents are alive with living organisms that help to break down stains!
88
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65