Sound travels fifteen times faster through steel than through air.
134
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
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
A cubic yard of air weighs about 2 pounds at sea level.
31
Aluminum used to be more valuable than gold!
84
In zero gravity, a candle's flame is round and blue.
16
Sound travels about 4 times faster in water than in air.
408