Balsa wood is classified as a hard wood!
41
If the chemical sodium is dropped into water it will immediately and violently explode.
67
Sound travels fifteen times faster through steel than through air.
134
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
According to scientists, the color of the cup that we're drinking from can alter our perception of the actual taste of the drink.
12
Nylon is made from coal and petroleum.
42
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
Sound travels about 4 times faster in water than in air.
408