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
Iron weighs more after it rusts.
68
One cubic foot of gold weighs more than 1,200 pounds!
78
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
Aluminum used to be more valuable than gold!
84
Sound travels about 4 times faster in water than in air.
408
The average home creates more pollution than does the average car.
33