green tech

Biofuels company Solazyme owns a unique process when it comes to converting algae into a fuel could replace the gas in your car -- a method that could be used to create oil on an extremely large scale and at an extremely low cost. The company has just announced it's going public: You might want to get in on the action.

Many companies and products claim to be green. But what does that actually mean? In some cases, labels can be misleading. As "greenwashing" increases, so does the need for greater consumer awareness.

Although Japan's stock market has been weak for the last 20 years, there are signs that a shift may be under way that could transform that nation into the gateway to Asia's emerging-market consumers. For patient investors looking for a contrarian play with huge upside potential, it's time to re-examine Japan.

Corning's (GLW) third-quarter profit rose 22% from a year earlier, as higher sales of the company's automotive and diesel-emission products more than offset the falling glass prices for flat-panel TVs.

From a remote workshop in northern Idaho, Scott Brusaw, an electrical engineer and retired Marine Corps sergeant, is building a system that charges cars with solar power through the road surface. And on Thursday, GE announced that Solar Roadways was the top community vote-getter in the company's $200 million Ecomagination challenge.

The hard-hit U.S. auto industry is making a comeback, partly due to advances in green technologies. From electric cars to engines that operate on natural gas, greentech should be good news not only for the industry, but also for investors. Hilary Kramer explains how to profit.

Solar power: Abundant, green and still a dream? The wait for solar's payday has outlasted even the more enthusiastic speculators, and for years the fundamentals haven't been very positive for solar companies. Now that's starting to change.

Al Gore's latest eco-treatise, Our Choice: A Plan To Solve the Climate Crisis, is set to hit stores Tuesday. The former vice-president says he will donate 100 percent of the proceeds from the book to the the Alliance for Climate Protection, a green group. But it turns out that the book money is...