Pumice is the only rock that floats on water.
14
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21
One 75-watt bulb gives more light than three 25-watt bulbs.
57
Billions of neutrinos pass unnoticed through your body every second.
6
According to studies, men change their minds two to three times more often than women.
72
A ball of glass will bounce higher than a ball made of rubber.
73
Nylon is made from coal and petroleum.
42
Aluminum used to be more valuable than gold!
84