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
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Most dust particles in your house come from dead skin.
48
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