A cesium atom in an atomic clock beats over nine billion times a second.
43
Scientists aren't sure what color dinosaurs were.
312
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
Liquid TIDE laundry detergent glows under a blacklight.
96
Iron weighs more after it rusts.
16
If the chemical sodium is dropped into water it will immediately and violently explode.
67
Brass doorknobs automatically disinfect themselves in about 8 hours.
18