Protection sought for rare butterflies at Nevada site

Conservationists who are already suing to block a geothermal power plant where an endangered toad lives in western Nevada are now seeking U.S. protection for a rare butterfly at another geothermal project the developer plans ...

Philippines revs up flagging green energy engine

Deep below the ancient volcanoes scattered around the Philippines sits a simmering stockpile of intense heat that officials hope will help revive the nation's sputtering green energy machine.

China creates model for sustainable urban living

At first glance, Tianjin Eco-City looks much like any other upscale Chinese urban development, with its rows of identical apartment blocks, wide roads and manicured verges.

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