Nylon is made from coal and petroleum.
42
The bark of an older redwood tree is fireproof.
65
Out of all the senses, smell is most closely linked to memory.
146
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Iron weighs more after it rusts.
68
Billions of neutrinos pass unnoticed through your body every second.
6