Airports that are at higher altitudes require a longer airstrip due to lower air density.
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The Earth's atmosphere weighs about 5.5 quadrillion tons.
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The earth is approx. 6,588,000,000,000,000,000 tons.
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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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4.5 pounds of sunlight strike the Earth each day.
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Sound travels about 4 times faster in water than in air.
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In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
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