Long-promised cellulosic ethanol is in modest production, but hurdles remain.
Despite Langerado's cancellation last week, festival organizers remain bullish.
Some scientists and citizens want firms that extract natural gas to reveal what chemicals they’re using.
One group’s formula for trying times: Live gratefully, spend less, buy justly, give more.
The chancellor of Washington, D.C., public schools puts teacher performance at the center of a controversial bid to remake one of the nation’s most troubled urban school districts.
Scientists see a trend in longer dry spells and winter snowpacks melting earlier than in the past.
By grazing them in a way that mimics the pattern of wild herbivores, advocates say, rangeland improves.
Admirals and generals hope to connect with soldiers via their own Facebook pages and blogs. But will they tweet?