Columbia University has developed an artificial tree that passively soaks up carbon dioxide from the air using "leaves" that are 1,000 times more efficient than true leaves that use photosynthesis.
15
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
The smell of freshly cut grass is actually a plant distress call.
31
Oak trees produce 2,200 acorns in a season, but each acorn only has a 1 in 10,000 chance of becoming an oak tree.
304
4.5 pounds of sunlight strike the Earth each day.
27