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It seems like you can't turn around these days without seeing a billboard or hearing a commercial touting some big corporation's latest green initiative.

Nestlé is getting into the fair-trade coffee business with its new Nescafé Partners Blend brand of instant coffee. BP boasts about its commitment to renewable energy with the new slogan "Beyond Petroleum." Even Wal-Mart, which has been criticized for its ethically suspect labor practices, is trying to go green. The company recently invited former Vice President Al Gore to speak about global warming and has pledged to bring organic food to the masses.

It seems like you can’t turn around these days without seeing a billboard or hearing a commercial touting some big corporation’s latest green initiative. Nestlé is getting into the fair-trade coffee business with its new Nescafé Partners Blend brand of instant coffee. BP boasts about its commitment to renewable energy with the new slogan “Beyond Petroleum.” Even Wal-Mart, which has been criticized for its ethically suspect labor practices, is trying to go green. The company recently invited former Vice President Al Gore to speak about global warming and has pledged to bring organic food to the masses.

Thanks to companies like NativeEnergy, the carbon-neutral movement - buying so-called green tags to offset CO2 emissions - is well into its hipster moment. Shows by Ben Harper, Radiohead and Death Cab for Cutie at Berkley's green Greek theater this summer will be carbon neutral, courtesy of NativeEnergy and Clif Bar. The Dave Matthews Band recently bought renewable credits from NativeEnergy for all of its 15 years of (almost nonstop) touring. Even we mere mortals can opt in through such low-dollar programs like the company's CoolDriver and WindBuilders.

Big business is going green ... hey, where you going? No, we mean it this time! Old-guard financial-services firm Goldman Sachs Group just announced new policies to promote forest and climate protection, and intends to invest $1 billion in alternative-energy projects. Procter & Gamble, seeking to trim oil costs, is subbing vegetable oil for petroleum products in Tide detergent and Head & Shoulders shampoos.