Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
A cubic yard of air weighs about 2 pounds at sea level.
31
In the 1950s, the US government placed beer next to an atomic bomb blast to determine if it was still drinkable. The result: in the event of a nuclear war, beer is safe to drink!
16
There are more than 270 people cryogenically frozen in the hope that one day the technology will exist that can revive them and extend their lives.
13
The smell of freshly cut grass is actually a plant distress call.
31
The average home creates more pollution than does the average car.
33
Most dust particles in your house are made from dead skin!
67
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57