Cold water weighs more than hot water.
93
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
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Each day, up to 150 species of life become extinct.
-23
In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
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