The earth is approx. 6,588,000,000,000,000,000 tons.
175
Most dust particles in your house come from dead skin.
48
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Termites are being researched as a possible renewable energy source as they can produce up to 2 litres of hydrogen from ingesting a single sheet of paper, making them one of the planet’s most efficient bioreactors.
24
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
The average home creates more pollution than does the average car.
33
Iron weighs more after it rusts.
16