Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Aluminum used to be more valuable than gold!
84
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
Iron weighs more after it rusts.
68
One third of the electricity produced on earth is used to power electric light bulbs!
75
Scientists aren't sure what color dinosaurs were.
312
Iron weighs more after it rusts.
16