The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
Iron weighs more after it rusts.
68
The bark of an older redwood tree is fireproof.
65
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
The left ear is more responsive to words of love and emotion whispered into it than the right.
40
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
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