From the nitrogen in our DNA, to the calcium in our teeth, the iron in our blood, to the carbon in our apple pies - all were made in the interiors of collapsing stars; we're all made of stardust.
22
The Himalayan Goji berry has more iron than steak, more vitamin C than oranges and more beta carotene than carrots.
35
Iron weighs more after it rusts.
16
There is a sea snail that wears a suit of iron plated armor. It is the only known animal to use iron sulphide as skeletal material.
9