The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42
The average temperature at 40,000 feet above sea level is -60 F.
56
No matter how cold it gets, gasoline will not freeze.
107
Sound travels fifteen times faster through steel than through air.
134
Research indicates that plants grow healthier when they are stroked.
173
