4.5 pounds of sunlight strike the Earth each day.
27
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
The smell of freshly cut grass is actually a plant distress call.
31
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Research indicates that plants grow healthier when they are stroked.
173
Pumice is the only rock that floats on water.
14
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61