Aluminum used to be more valuable than gold!
84
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
Hot water can freeze faster than cold water.
181
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21
Out of all the senses, smell is most closely linked to memory.
146
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51