Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
German chemists made a replica of a trophy the size of one molecule.
68
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
One cubic foot of gold weighs more than 1,200 pounds!
78
One ragweed plant can release as many as one billion grains of pollen!
51
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
Sound at the right vibration can bore holes through a solid object.
134