A cubic yard of air weighs about 2 pounds at sea level.
31
The sun is 330,330 times larger than the earth.
75
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
Most liquid laundry detergents are alive with living organisms that help to break down stains!
88
If the chemical sodium is dropped into water it will immediately and violently explode.
67
Nearly 50% of the world's scientists are assigned to military projects.
71
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Out of all the senses, smell is most closely linked to memory.
146