No-battery lantern uses water and salt for light

(Phys.org)—From young science students taking their cups and metals to the lab, to older inventors demonstrating their prototypes, it is no secret that salt water can be utilized as a conductor of electricity. Japan's Green ...

Fixing the environment: when solutions become problems

In a world where climate change, air and water pollution, biodiversity loss, water scarcity, ozone depletion, and other environmental problems overlap, a fix in one arena can cause trouble in another.

US town bans bottled water

Water, water everywhere—just not in plastic bottles, says a town in the US state of Massachusetts.

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