Balsa wood is classified as a hard wood!
41
Diamonds can be shattered with a hammer.
-104
Iron weighs more after it rusts.
68
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5