Out of all the senses, smell is most closely linked to memory.
146
The bark of an older redwood tree is fireproof.
65
There is a surgical implant being developed that will give you an orgasm at the touch of a button.
20
Pure water (H2O) does not conduct electricity on its own.
46
Iron weighs more after it rusts.
68
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
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