Most dust particles in your house are made from dead skin!
67
A ball of glass will bounce higher than a ball made of rubber.
73
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
The bark of an older redwood tree is fireproof.
65
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
Balsa wood is classified as a hard wood!
41
According to studies, men change their minds two to three times more often than women.
72