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U.S. biofuel company Solazyme Inc said on Thursday it will be providing its algae-derived jet fuel to the U.S. Navy for testing and certification.

Privately held Solazyme will sell 1,500 gallons of the green fuel to the U.S. Navy, which is buying fuel from the San Francisco-based company for the second time.

California Governor Arnold Schwarzenegger is ready to put his star power to work for President Barack Obama on the environment when his own term ends next year, the former movie actor said on Thursday.

It hasn't yet reached Ali Lamie's small store, which flashes with colours as he charges cellphones by the rack. But after more than 30 years, Bumbuna hydroelectric dam is bringing power and economic hope to Sierra Leone.

Mumbai Cowdung and kitchen wastes will turn into cooking gas everyday at the Bombay Society for Prevention of Cruelty to Animals (SPCA) Hospital, which has installed a biogas plant on its Lower Parel premises.

The organic conversion will involve no extra energy or electricity. What

China laid out a plan to curb carbon emissions by 2020 and U.S. President Barack Obama called on all nations to act now to tackle global warming, as world leaders tried to inject momentum into climate change talks.

Environment Ministers from about 190 nations gather in the Danish capital at the end of the year to try and agree to a broader global pact to fight climate change.

The aim is to build on the existing Kyoto Protocol by ensuring rich nations sign up to deeper emissions cuts while offering greater assistance to developing countries to help them curb greenhouse gas pollution as well.

Mayor Antonio Villaraigosa wants to make Los Angeles the "cleanest, greenest big city" in the United States, but a key project to bring renewable energy across the desert to the city could change under pressure from environmental groups.

The German army has identified a series of wind park projects as a threat to national security and blocked investments worth 1.5 billion euros because it fears spinning wind turbines will interfere with its radar systems.

World leaders gathered here for a global summit meeting on climate change made modest proposals on Tuesday for combating the problem, underscoring the way domestic political battles still trump what United Nations officials had hoped would be a sense of global urgency.

Chinese President Hu Jintao announced new goals on Tuesday to slow the growth in his country's carbon dioxide emissions while U.S. President Barack Obama warned time was short to act on global warming.

Following are reactions to the summit, meant to spur negotiations on a 190-nation deal due to be reached in Copenhagen at a meeting from December 7-18: