Pumice is the only rock that floats on water.
14
Diamonds can be shattered with a hammer.
-104
4.5 pounds of sunlight strike the Earth each day.
27
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21
German chemists made a replica of a trophy the size of one molecule.
68
Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15
Billions of neutrinos pass unnoticed through your body every second.
6