Greenwashing

The term came into use around 1990, most notably as the title of an article in the 1991 March/April issue of Mother Jones magazine. The term is generally used when significantly more money or time has been spent advertising being green (that is, operating with consideration for the environment), rather than spending resources on environmentally sound practices. This is often portrayed by changing the name or label of a product, to give the feeling of nature, for example putting an image of a forest on a bottle of harmful chemicals. Environmentalists often use greenwashing to describe the actions of energy companies, which are traditionally the largest polluters.

http://en.wikipedia.org/wiki/Greenwash