At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
Out of all the senses, smell is most closely linked to memory.
146
Research indicates that plants grow healthier when they are stroked.
173
One third of the electricity produced on earth is used to power electric light bulbs!
75
A cubic yard of air weighs about 2 pounds at sea level.
31
Scientists are now able to grow 'beating' heart tissue in a lab!
162
Aluminum used to be more valuable than gold!
84