Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Out of all the senses, smell is most closely linked to memory.
146
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
Aluminum used to be more valuable than gold!
84
One ragweed plant can release as many as one billion grains of pollen!
51
Scientists aren't sure what color dinosaurs were.
312
Iron weighs more after it rusts.
68