German chemists made a replica of a trophy the size of one molecule.
68
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
Sound travels about 4 times faster in water than in air.
408
Scientists are now able to grow 'beating' heart tissue in a lab!
162
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
