Al Gore must be smiling

It seems that U.S. big business is doing its best to make up for any past rectitude on climate change. Barely a day goes by without another firm announcing a "green" initiative.

In back to back announcements this month, first Citigroup announced that it will shift $50 billion to investing and financing for projects that reduce global carbon emissions, then General Motors became the first US car maker to join the U.S. Climate Action Partnership, a business coalition calling on the U.S. government to support a mandatory nationwide cap on global-warming pollution. GM Chief Executive Rick Wagoner announced that:

GM views the need to promote energy security and reduce greenhouse gas emissions as both a business necessity and an obligation to society.

Meanwhile, a company with more long standing green credentials, Starbucks Coffee, has partnered with environmental group Global Green USA to create Planet Green Game. At this new site players take on the mission of reducing CO2 emissions in the fictional town of Evergreen. If you feel up to the task, click here.