Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
Columbia University has developed an artificial tree that passively soaks up carbon dioxide from the air using "leaves" that are 1,000 times more efficient than true leaves that use photosynthesis.
15
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
A cubic yard of air weighs about 2 pounds at sea level.
31
Sound travels fifteen times faster through steel than through air.
134
The sun is 330,330 times larger than the earth.
75