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
The bark of an older redwood tree is fireproof.
65
One 75-watt bulb gives more light than three 25-watt bulbs.
57
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
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
A cubic yard of air weighs about 2 pounds at sea level.
31
In 1999, Harvard physicist Lene Hau was able to slow down light to 17 meters per second and in 2001, was able to stop light completely.
39