Sound travels fifteen times faster through steel than through air.
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Out of all the senses, smell is most closely linked to memory.
146
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
Scientists are attempting to create a synthetic brain by reverse-engineering the mammalian brain down to the molecular level. A cellular human brain is predicted possible by 2023. It hopes to shed light on consciousness.
10
Aluminum used to be more valuable than gold!
84
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Scientists are now able to grow 'beating' heart tissue in a lab!
162