Scientists aren't sure what color dinosaurs were.
312
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
4.5 pounds of sunlight strike the Earth each day.
27
Most liquid laundry detergents are alive with living organisms that help to break down stains!
88
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
A ball of glass will bounce higher than a ball made of rubber.
73
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79