At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
Scientists aren't sure what color dinosaurs were.
312
Cold water weighs more than hot water.
93
Billions of neutrinos pass unnoticed through your body every second.
6
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 bark of an older redwood tree is fireproof.
65