Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
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
Out of all the senses, smell is most closely linked to memory.
146
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Nearly 50% of the world's scientists are assigned to military projects.
71
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
During photosynthesis, plants emit light humans can’t see, but NASA can see that light from space - and they've even made maps of it!
21