Tata Motors may be in for a shock. Under a tough new emissions regime to be introduced by the European Union, Land Rover and Jaguar are likely to face emission fines of up to

Rising amounts of nitrogen entering the oceans from human activities are less beneficial than previously thought as a fertiliser for tiny marine plants that help slow global warming, scientists said on Thursday. "As much as a third of the nitrogen entering the world's oceans from the atmosphere is man-made," according to a team of 30 scientists writing in the journal Science. "It's not as good a thing as some people would like it to be," said Peter Liss, of the University of East Anglia in England which led the study with Texas A&M University.

Some day, fuel cells may power your car and exhaust only water and perhaps carbon dioxide. More efficient and cleaner than an internal combustion engine, their emissions will be much lower. They may also run your home without the energy loss of power lines, or even power your laptop or cell phone. But not today or even tomorrow.

Carbon dioxide (CO2) emanates from the smokestacks of coal-fired power plants and other generators and is a greenhouse gas. Existing CO2 capture techniques involve the use of solid materials that lack sufficient stability for repeated use

Greenhouse gases are at higher levels in the atmosphere than at any time in at least 800,000 years, according to a study of Antarctic ice on Wednesday that extends evidence that mankind is disrupting the climate. Carbon dioxide and methane trapped in tiny bubbles of air in ancient ice down to 3,200 metres (10,500 ft) below the surface of Antarctica add 150,000 years of data to climate records stretching back 650,000 years from shallower ice drilling.

until now, it was believed that methane, from cattle dung and paddy cultivation, was the second biggest contributor to global warming after carbon dioxide. A recent review says soot is the second

The concentration of carbon dioxide in the atmosphere has reached a record high, according to the latest figures, renewing fears that climate change could begin to slide out of control. Scientists at the Mauna Loa observatory in Hawaii say that CO2 levels in the atmosphere now stand at 387 parts per million (ppm), up almost 40 per cent since the industrial revolution and the highest for at least the last 650,000 years.

PORTLAND, Oregon: Senator John McCain sought to distance himself from President George W. Bush this week as he called for a mandatory limit on greenhouse gas emissions in the United States to combat climate change. McCain, in a speech on Monday at a wind power company, also pledged to work with the European Union to diplomatically engage China and India, two of the world's biggest polluters, if the nations refuse to participate in an international agreement to slow global warming.

Scientists have warned that cli mate change could soon begin to get out of control, with concentration of carbon dioxide in the atmosphere touching a record high. Scientists at the Mauna Loa observatory in the US state of Hawaii say that CO2 levels in the atmosphere now stand at 387 parts per million (ppm), up almost 40 per cent since the industrial revolution and the highest for at least the last 650,000 years.