One 75-watt bulb gives more light than three 25-watt bulbs.
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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
During photosynthesis, plants emit light humans can’t see, but NASA can see that light from space - and they've even made maps of it!
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MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
No matter how cold it gets, gasoline will not freeze.
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A cubic yard of air weighs about 2 pounds at sea level.
31