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 average temperature at 40,000 feet above sea level is -60 F.
56
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
One cubic foot of gold weighs more than 1,200 pounds!
78
The idea of left brain (logical) and right brain (creative) has no basis in neuroscience and is in fact a myth.
16
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
Iron weighs more after it rusts.
16