Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
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
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
Out of all the senses, smell is most closely linked to memory.
146
A ball of glass will bounce higher than a ball made of rubber.
73
Balsa wood is classified as a hard wood!
41