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
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Out of all the senses, smell is most closely linked to memory.
146
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
According to scientists, the color of the cup that we're drinking from can alter our perception of the actual taste of the drink.
12