During photosynthesis, plants emit light humans can’t see, but NASA can see that light from space - and they've even made maps of it!
21
One barrel of petroleum holds 42 gallons.
20
Nylon is made from coal and petroleum.
42
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57
Diamonds can be shattered with a hammer.
-104
One 75-watt bulb gives more light than three 25-watt bulbs.
57
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79