Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
The idea of left brain (logical) and right brain (creative) has no basis in neuroscience and is in fact a myth.
16
Balsa wood is classified as a hard wood!
41
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
Most liquid laundry detergents are alive with living organisms that help to break down stains!
88
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65