The Earth's atmosphere weighs about 5.5 quadrillion tons.
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Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
Hot water can freeze faster than cold water.
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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
Balsa wood is classified as a hard wood!
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Nuclear power prevented an average of over 1.8 million deaths between 1971-2009 as a result of lower air pollution from reduced coal usage according to NASA.
5
4.5 pounds of sunlight strike the Earth each day.
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