Balsa wood is classified as a hard wood!
41
Your brain is 80% water.
525
The smell of freshly cut grass is actually a plant distress call.
31
According to studies, men change their minds two to three times more often than women.
72
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
Aluminum used to be more valuable than gold!
84
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155