Air traffic control was developed in the 1930s after multiple mid-air collisions over major airports.
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The internet connected computers across the world.
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Some encryption methods are mathematically impossible to crack with current technology.
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The internet routes data in 'packets' — small chunks that may take different paths and reassemble at the destination.
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Your brain can store the equivalent of millions of gigabytes of information.
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Satellites can read license plates from orbit under ideal conditions.
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Sound travels about four times faster through water than through air.
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Sound travels about 4 times faster through water than through air.
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The satellite enabled global broadcasting and navigation.
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