How do you boil water? Eschewing the traditional kettle and flame, engineers have invented a bubble-wrapped, sponge-like device that soaks up natural sunlight and heats water to boiling temperatures, generating steam through its pores. The design, which the researchers call a ‘solar vapor generator,’ requires no expensive mirrors or lenses to concentrate the sunlight, but instead relies on a combination of relatively low-tech materials to capture ambient sunlight and concentrate it as heat.

Read more here:: http://feeds.sciencedaily.com/~r/sciencedaily/matter_energy/solar_energy/~3/iANF4PN0qHQ/160822124924.htm

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