Nearly 50% of the world's scientists are assigned to military projects.
71
Sound travels fifteen times faster through steel than through air.
134
Iron weighs more after it rusts.
16
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
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79