Iron weighs more after it rusts.
16
The smell of freshly cut grass is actually a plant distress call.
31
Most dust particles in your house come from dead skin.
48
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
A ball of glass will bounce higher than a ball made of rubber.
73
Most liquid laundry detergents are alive with living organisms that help to break down stains!
88
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Most dust particles in your house are made from dead skin!
67