Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
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
The idea of left brain (logical) and right brain (creative) has no basis in neuroscience and is in fact a myth.
16
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Iron weighs more after it rusts.
68
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
Dr.Jonas Salk, the man who came up with the cure for polio, didn’t patent the drug. This made the drug more affordable to the general public, and he lost out an an estimated $7 billion dollars for himself.
41