A ball of glass will bounce higher than a ball made of rubber.
73
The gas that gives rotten eggs their distinctive foul smell may slow ageing and block damaging chemical reactions inside cells, according to scientists in China.
5
Nearly 50% of the world's scientists are assigned to military projects.
71
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
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
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
The average home creates more pollution than does the average car.
33