Iron weighs more after it rusts.
16
Balsa wood is classified as a hard wood!
41
If the chemical sodium is dropped into water it will immediately and violently explode.
67
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
In 1999, Harvard physicist Lene Hau was able to slow down light to 17 meters per second and in 2001, was able to stop light completely.
39
One 75-watt bulb gives more light than three 25-watt bulbs.
57