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Water is becoming something that is in short supply, meaning we may soon be drinking reclaimed wastewater, especially in the desert states of the West (which, ironically, are the fastest-growing areas of the US). We know our drinking water is laced with prescription medicines, but WHAT ELSE is in there–and can it be removed before we drink it?

San Diego is trying to do just that, with a water treatment plant that cost $13 million and produces a million gallons of potable water daily.
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An Earth-like planet recently spotted outside our solar system is the first that atromomers have found that could support liquid water and harbor life.

Liquid water is what astronomers look for, and the newly found planet is located at the perfect distance from its sun—just the right distance so that the water on its surface doesn’t freeze or vaporize.

The new planet is about 50% bigger than Earth and about five times more massive. It’s called Gliese 581 C, after its star, Gliese 581, a small red dwarf star that is about one-third as massive as the Sun.
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When our satellites search for other planets that might harbor life, they always search for water. But now, for the first time, astronomers have detected around a burgeoning solar system a sprawling cloud of water vapor that’s cold enough to form comets, which could eventually deliver oceans to dry planets. And with oceans, life could spring up–or maybe migrate to the planet from another place.
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