The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Nearly 50% of the world's scientists are assigned to military projects.
71
Sound travels fifteen times faster through steel than through air.
134
Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16