Balsa wood is classified as a hard wood!
41
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
The inventor of the Super Soaker squirt gun was a NASA Scientist who also helped develop the Stealth Bomber and the Galileo mission to Jupiter.
7
If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
117
Columbia University has developed an artificial tree that passively soaks up carbon dioxide from the air using "leaves" that are 1,000 times more efficient than true leaves that use photosynthesis.
15
Most dust particles in your house come from dead skin.
48
The smell of freshly cut grass is actually a plant distress call.
31
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71