Aluminum used to be more valuable than gold!
84
One barrel of petroleum holds 42 gallons.
20
One 75-watt bulb gives more light than three 25-watt bulbs.
57
According to scientists, the color of the cup that we're drinking from can alter our perception of the actual taste of the drink.
12
The bark of an older redwood tree is fireproof.
65
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
The average temperature at 40,000 feet above sea level is -60 F.
56
Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15