Marc Gunther

Unilever is making serious strides to limit its environmental footprint while improving health and well being. But will consumers -- and investors -- reward it for its efforts? Read More

DuPont's buildings division went from sending 81 million pounds of waste to landfill in 2008 to zero in 2012. Here's how they did it. Read More

Consumers say they want green products, but sales of cleaner cars and household products remain small. Companies such as GoodGuide hope to help consumers make a bigger difference. Read More

The new documentary "Shattered Sky" reminds us that conservative leaders -- not just liberals -- have historically played key roles in protecting the environment. Why has conservation become a Democrat issue? Read More

Why would the world's largest auto maker invest in a company that helps people use fewer cars? Read More

In advance of his new film with Universal Pictures, The Lorax is promoting environmentally friendly sponsors such as HP, Seventh Generation and Whole Foods. He's also advertising a Mazda SUV. Read More

The publication of internal documents -- which may or may not be faked -- from a think-tank that challenges the consensus on climate change reveals a great deal about the toxic debate over climate science and policy. Read More

The case of a 100 percent post-consumer recycled content toilet paper illustrates why a shift toward sustainability will have to come from the top down, not the bottom up. Read More

The major problems uncovered in Apple's -- and the IT industry's -- Chinese supply chain in a series of recent exposes go far beyond Apple to the heart of how companies measure their social and environmental impacts. Read More

Last year, Google invested more than $900 million in clean energy projects. But does it have an energy policy? Does it need one? Read More