A circle is defined by Pi
A blue whale's throat is about the size of a melon
Each year 40 000 tons of extra mass from space is added to our planet
The coast line of Greenland is approximately the same length as the Equator
Durex are working on a condom with a small amount of nitroglycerin (GTN) in the tip to stimulate erection
Human heart valves receive no blood supply meaning if they become infected white blood cells cannot get to the site of infection to fight it
Strawberries are not technically fruit
Eatiing food with vinegar in it increases satiety
The coconut is the largest seed in the world
The dementors in Harry Potter represent depression, which JK Rowling suffered from
Bitter courgettes can give you symptoms of food poisoning due to a toxin they produce
Veins have valves in to stop blood from flowing backwards in them as they dont contract like arteries
That is all for now...
Cracked