There’s no comprehensive, standardized way for cities to track their carbon pollution, but a new study puts forward a useful model. And it counts not just the CO2 we produce, but the CO2 we consume.

With the value of the residential green building market expected to grow fivefold by 2016, builders say going green is great for their business.

Last fall, our green-living pioneer, the Greenie Pig, set out to offset the globe-warming gases she produced on a trip to Texas. Four months into it, she’s not even halfway to her goal. The lesson? Well, read on …

Claims of biochar being a magic-bullet solution to climate change are so far unfounded, but if we invest heavily in research, it could turn out to save us.

Walmart has moved sustainability from the fringe to the forefront of business concerns, showing the drill-baby-drill crowd that eco-friendly choices can help America prosper and compete.

Chefs these days like to talk big about sustainable food, but they forget one of the key tenets of eco-friendly eating: cut back on the meat.

Democrats can win the public opinion battle on Keystone XL, but they have to fight it.

In a hotter world, watching and playing football outdoors in the South will be almost unbearable.

Confused about the latest science on antibiotic-resistant Staph bacteria found in grocery-store pork? So were we, until we spoke to expert Maryn McKenna.

The Institute for Policy Integrity is using crowdsourcing to find out exactly how much companies like Shell and ExxonMobil receive in subsidies and tax breaks.