A 'jiffy' is an actual unit of time for 1/100th of a second!
66
Iron weighs more after it rusts.
68
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
The average home creates more pollution than does the average car.
33
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57