The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
The idea of left brain (logical) and right brain (creative) has no basis in neuroscience and is in fact a myth.
16
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
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
A cubic yard of air weighs about 2 pounds at sea level.
31
Sound travels fifteen times faster through steel than through air.
134
Most dust particles in your house come from dead skin.
48
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0