Out of all the senses, smell is most closely linked to memory.
146
Pumice is the only rock that floats on water.
14
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
Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Oak trees produce 2,200 acorns in a season, but each acorn only has a 1 in 10,000 chance of becoming an oak tree.
304
Billions of neutrinos pass unnoticed through your body every second.
6