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Water, water everywhere. But most of it is sea water - you can\u2019t drink it. Discover the most promising technologies for desalination and why solar cells are key. Also, how astronauts filter \u201cwater-closet water\u201d to drink it, and how to turn a salt pond back to a wetland.\nPlus, from Roman aqueducts to modern-day pumps: a history of quenching human thirst. And, why NASA strives to \u201cfollow the water.\u201d\nGuests:\n\n\nBrian Fagan - Anthropologist at the University of California, Santa Barbara, author of Elixir: A History of Water and Humankind\n\n\n\nJohn Bourgeois - Biologist and Executive Project Manager, South Bay Salt Pond Restoration Project\n\n\nMichael Meyer - Lead scientist for the Mars Exploration Program\n\n\nFarouk El-Baz - Geologist and Director of the Center for Remote Sensing, Boston University\n\n\nMichael Flynn - Principal investigator for NASA\u2019s advanced life support branch, Ames Research Center\n\nDescripci\xf3n en espa\xf1ol\nLearn more about your ad choices. Visit megaphone.fm/adchoices