Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
For a high school science fair project, 17-year-old Michio Kaku built a particle accelerator in his parent's garage that was able to generate a magnetic field 20,000 times greater than the Earth's and produce collisions powerful enough to create antimatter.
34
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Hot water can freeze faster than cold water.
181
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
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
Nylon is made from coal and petroleum.
42