/r/askscience
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If Cacti are known for growing in the harshest of environments, Why don't we see them in non-harsh environments?
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Salt is used to melt snow on roads. But in the Olympics in Sochi right now they are using salt to harden snow and keep it from melting. How is this contradiction possible?
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Why do solar panels use Silicon cells rather than a metal with a lower work function, such as Cesium/Caesium?
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