"Wal-Mart Stores Inc plans to massively cut greenhouse gas emissions from its global supply chain within five years -- an effort the retailer said is equivalent to taking more than 3.8 million cars off the road for a year."

"GM's efforts to sell its Hummer brand to a little-known Chinese company have fallen apart, the U.S. automaker announced Wednesday. As a result, GM will begin to dismantle a brand of gas-guzzling SUVs that were synonymous with pre-financial crisis wealth and excess."

"The cost of pollution and other damage to the natural environment caused by the world's biggest companies would wipe out more than one-third of their profits if they were held financially accountable, a major unpublished study for the United Nations has found."

"Most publicly traded companies that depend on water do not adequately disclose their financial risks to droughts and future regulations, even as water scarcity problems mount, according to a report released on Thursday."

"What do Nike, REI, the Vancouver Olympics, and the Washington state government have in common? They've all promised to eliminate their impact on the climate by going "carbon–neutral." REI aims to have zero output of greenhouse gases like carbon dioxide by the year 2020. But since REI set the zero–impact goal, its emissions have been heading rapidly in the opposite direction."

"New rules for lead paint removal go into effect April 22, adding a bit more time and cost to some home renovations."

"China’s rise as a major solar module maker has been meteoric, but perhaps nowhere has its ascension been faster than in California, the United States’ largest solar market."