At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
Scientists aren't sure what color dinosaurs were.
312
Hot water can freeze faster than cold water.
181
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
Sound at the right vibration can bore holes through a solid object.
134
Sound travels about 4 times faster in water than in air.
408
Iron weighs more after it rusts.
68
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16