/r/askscience
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"Jack Andraka, 15, invents cancer test that is 168x faster, 26000x less expensive, and 400x more sensitive than the current standard. 3¢ and 5 minutes." Is this an actually proven method or is just being hyped by the press and ignoring some shortcomings of it?
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The lowest recorded temp. in modern history (−89.2 °C) was below the sublimation point of CO2. During colder eras, were polar regions laden with dry-ice? How did the deposition of CO2 into the polar regions affect atmospheric composition woldwide and how extensive were the dry-ice sheets?
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