Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Aluminum used to be more valuable than gold!
84
Scientists are now able to grow 'beating' heart tissue in a lab!
162
Nylon is made from coal and petroleum.
42
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21
The left ear is more responsive to words of love and emotion whispered into it than the right.
40
One 75-watt bulb gives more light than three 25-watt bulbs.
57