Sound travels about 4 times faster in water than in air.
408
German chemists made a replica of a trophy the size of one molecule.
68
Billions of neutrinos pass unnoticed through your body every second.
6
A cesium atom in an atomic clock beats over nine billion times a second.
43
The average home creates more pollution than does the average car.
33
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
The smell of freshly cut grass is actually a plant distress call.
31