Climate-related Business Could Top $2 Trillion by 2020: “Global revenues from energy efficiency, renewables and other climate-related sectors could top $2 trillion by 2020, up from $530 billion last year, according to HSBC Global Research.
The $530 billion last year was the result of 75 percent growth over 2007, according to the World Business Council for Sustainable Development.
The 2008 figure has far exceeded the [...]“

(Via Environmental Leader.)