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Aggressive climate mitigation is absolutely worth the costs, but economic models are not a good guide to how difficult it might be.
More abundant natural gas is unlikely to cut greenhouse gas emissions much on its own, a new study finds.
RIP Theo Colborn, a scientist who alerted us to the issue of endocrine-disrupting chemicals.
The world's largest solar thermal power plant is under fire for its potentially catastrophic impact on local birds.
While high-profile issues aroused inflexible rhetoric, the food movement made real progress this year in a handful of important but less prominent areas.
Wasting less where food is produced is not only good for the planet, but it also helps reduce poverty -- the best way to get at hunger.
Even if we solve the methane problem, shale gas alone won't save us.
New science shows that thanks to methane leaks, gas won't work as a "bridge fuel."
The many ways to get through an overload of beets, starting with this bright salad.