Green investments are traditional investment vehicles (such as stocks, exchange-traded funds and mutual funds) in which the underlying business(es) are somehow involved in operations aimed at improving the environment. This can range from companies that are developing alternative energy technology to companies that have the best environmental practices.

For the stock savvy, there are many pure-play, leading edge green companies that are traded on the major stock exchanges. These include startups that are developing new methods for creating biofuels or solar panels, and traditional market cap heavyweights that are expanding their product lines to include environmentally friendly products (such as General Electric's development of wind-powered electric generators). (To learn more, read Go Green With Socially Responsible Investing.)

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