California governor pushing to make the state a clean tech leader.

Google announces breakthrough in mirror technology that could cut the costs of solar thermal power in half.

Digits -- the new live online show from the WSJ -- will feature daily snippets about the technology innovations rocking Wall Street.

Venture capital investments into energy efficiency projects rose in 2009 despite an overall decline in cleantech funding.

Obama announces 28% CO2 reduction and Leonardo DiCaprio and a host of celebs get behind the NRDC's Senate plea to pass clean energy legislation.

Technology pundit Shawn Lesser identifies 11 breakthrough companies in Finland's expanding cleantech sector.

Finland's cleantech sector traces innovative industry back to ancient roots.

A new breakthrough may bring silicon-air batteries to market in less than 5 years.

Porifera may be the first to take a new nanotechnology to market, offering a viable solution for sequestering carbon.

California's Amtrak trains get an environmentally friendly upgrade.