California's biggest utility is making a huge financial bet on solving a light-bulb riddle: How much energy can it conserve by getting its customers to remove one sort of bulb and screw in another?

A £1m competition to find the brightest ideas to help fight climate change is being launched. The Big Green Challenge is looking for people's best "Eureka moments" for reducing carbon emissions.

Greenpeace on Tuesday called on the Indian government to set mandatory fuel efficiency standards for cars, warning vehicle emissions will contribute significantly to climate change.

Three families got an incentive to decrease their energy consumption by appearing on "Energy Smackdown," a reality TV show in which contestants competed to shrink their carbon footprint.

The Environmental Protection Agency is launching a campaign to get Americans to recycle their cell phones.

Experts are calling "misleading" a study which suggests that emissions from the shipping industry cool the world and will continue to do so for centuries.

Environmental groups fear that political meddling and a rush to sell oil leases are behind the Administration's announcement that it will miss a legal deadline on listing the polar bear under the Enda

London's first "light bulb amnesty" was launched today by the mayor of London, Ken Livingstone. The amnesty is designed to help people switch from traditional, energy-guzzling bulbs to new energy-effi

The race to find a replacement auto refrigerant heats up in Europe as a ban on HFC-134a looms.

The ideas championed by some green-minded Californians have gone mainstream. And Detroit's Big Three are scrambling to adapt.

Experts at the University of California, Irvine, say reflective plants could send more of the sun's heat back into space, and even reverse temperature rises in parts of the world.

The world's cheapest car is set to be snapped up by millions of Indians - despite fears it will be a disaster for global warming.

Caribbean coral reefs have suffered significant damage from over-fishing and run-off from agricultural land, according to a study of 322 sites across 13 countries. The study provides compelling eviden

The notion of modifying Earth's climate with sunshades or a blanket of reflective aerosols to counteract global warming -- known as geoengineering -- has been around for years. But climate models sugg

US officials have delayed their decision on whether polar bears should be listed as threatened under the Endangered Species Act. The status of the bears relies heavily on climate change and the future

Incurable, mosquito-borne dengue disease could spread from subtropical areas into the United States through global warming, requiring greater efforts to combat it, health authorities said on Tuesday.

Finance Minister Taylor says individuals in BC need to shoulder more of the burden in the fight against climate change, and that a new tax may be the best way to get people more green.

India's Rajendra Pachauri said on Monday he will probably seek a new term as head of the UN climate panel that shared the 2007 Nobel Peace Prize with former US Vice President Al Gore.

Japan's economy would lose an estimated $1 trillion as a result of climate change in the 21st century, a government panel predicts.

Developed countries such as the U.S., Canada and Australia insisted on having an emissions trading component in the international Kyoto Protocol on climate change, but are now rushing to catch up to t