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We may be driving on air in the next few years. That is, we may be driving vehicles powered by compressed air, instead of gasoline or diesel fuel. Researchers Yu-Ta Shen and Yean-Ren Hwang of the National Central University in Taiwan have developed an air-powered motorcycle, which uses the energy in compressed air, rather than gas, to drive the motor.

Researchers at the U.S. Department of Energy's Idaho National Laboratory say they have devised an inexpensive way to produce plastic sheets containing billions of nanoantennas that collect heat energy generated by the sun and other sources. They say this technology is the first step toward a solar energy collector that could be mass-produced on flexible materials.

A company called Green Energy Capital Partners based in Philadelphia is planning to build what they term as the second largest solar energy plant in the nation, in the Carbon County. The $60 million, 100-megawatt solar energy plant will be built on 100 acres of land near the Green Acres Industrial Park in Nesquehoning. The solar energy plant is predicted to contain 40,000 solar panels on rotating mounts.

U.S. Department of Energy (DOE) Deputy Assistant Secretary for Energy Efficiency David Rodgers today announced the launch of DOE's Zero-Net Energy Commercial Building Initiative (CBI) with establishment of the National Laboratory Collaborative on Building Technologies Collaborative (NLCBT). These two efforts both focus on DOE's ongoing efforts to develop marketable Zero-Net Energy Commercial Buildings, buildings that use cutting-edge efficiency technologies and on-site renewable energy generation to offset their energy use from the electricity grid by 2025.

this is the place where Solar Citizens live, the place where we can rally to change and improve energy policy in America so that solar power becomes a key element of our future.

New greenhouse gases emitted in making flat-screen televisions or some refrigerants might be capped under a planned U.N. treaty to combat global warming, delegates at U.N. talks in Ghana said on Friday. Emissions of the recently developed industrial gases, including nitrogen trifluoride and fluorinated ethers, are estimated at just 0.3 percent of emissions of conventional greenhouse gases by rich nations. But the emissions are surging.

How much is the Earth worth to us? At a global conference in Bonn, Germany, representatives of 191 nations are discussing a revolution in conservation. By making a highly profitable business out of saving forests, whales and coral reefs, environmentalists hope to put a stop to a dramatic wave of extinctions.

Environmentalists have hailed recent announcements by the US Interior Department that purport to protect wildlife, but both of these announcements carry with them asterisks that should give greens pause. On Friday, the Interior Department's Bureau of Land Management announced that some 340 square miles of ecologically sensitive land in the northeast section of Alaska's National Petroleum Reserve will be off limits to drilling.

KINGSTON, Ontario, Jun 25 (IPS) - North America's abject failure to meet the challenge of climate change has been "un-American", environmentalist and scientist David Suzuki told delegates Tuesday at the World Wind Energy Conference, the first ever in the region. "We're facing an ecological crisis, a crisis far, far worse than Pearl Harbour," Suzuki said. Twenty years ago this week, one of the United States' leading scientists warned Congress of the imminent danger of climate change and said that waiting decades to take action was too risky. Now James E. Hansen of the National Aeronautics and Space Administration has published new research indicating that greenhouse gas concentrations have pushed the climate near a dangerous tipping point that will unleash far-reaching changes in the atmosphere and oceans that could take millennia to reverse.

A leading energy body is calling for a $45 trillion (£23 trillion) green revolution to tackle global warming. The International Energy Agency (IEA) said nations must spend 1% of annual economic output on new technology to halve carbon dioxide emissions by 2050.

The government plans to announce policy measures aimed at halving the price of solar power generation in the next three to five years as part of its action plan on greenhouse gas emissions, government sources say. According to the sources, the measures will form part of an action plan designed to bring about a 60 percent to 80 percent cut in carbon dioxide emissions by 2050 and thereby create a low carbon-emission society.

An underwater turbine that generates electricity from tidal streams was plugged into the UK's national grid today. It marks the first time a commercial-scale underwater turbine has fed power into the network and the start of a new source of renewable energy for the UK.

Former Vice President Al Gore said on Thursday that Americans must abandon fossil fuels within a decade and rely on the sun, the winds and other environmentally friendly sources of electric power, or risk losing their national security as well as their creature comforts.

United Nations Secretary General Ban Ki Moon has warned that without a comprehensive international agreement to reduce the greenhouse gas emissions that lead to global warming, humanity faces "oblivion." "The world's scientists have spoken with one voice: the situation is grim and urgent action is needed," Ban said. "The situation is so desperately serious that any delay could push us past the tipping point, beyond which the ecological, financial and human costs would increase dramatically.

A tiny rectangle superimposed on the vast expanse of the Sahara captures the seductive appeal of the audacious plan to cut Europe's carbon emissions by harnessing the fierce power of the desert sun. Dwarfed by any of the north African nations, it represents an area slightly smaller than Wales but scientists claimed yesterday it could one day generate enough solar energy to supply all of Europe with clean electricity.

Is the double-nickel speed limit ready for a comeback? Congress thus far has shown no movement toward resurrecting the 55-mph speed limit, but one of the Senate's senior members - Republican John Warner of Virginia - says it's time to start the conversation about an energy-saving national speed limit to help spare Americans from usurious fuel costs.

Britain is trying to water down tough new European legislation to boost the uptake of renewable energy, despite a pledge by Gordon Brown last month to launch a "green revolution" based on clean technology. Documents obtained by the Guardian show the UK wants to block attempts to give renewable electricity sources such as wind farms priority access to the national grid. The European official who drafted the legislation accused Britain of "obstructing" EU efforts on renewables and said UK officials wanted to protect traditional energy suppliers and their coal, gas and nuclear power stations.

Global investment in sustainable energy amounted to $148 billion in 2007, a 60 percent gain over 2006, according to a United Nations report (PDF) Tuesday. That will grow to $600 billion past 2020, reported New Energy Finance, a consultant to the U.N. Environment Programme.

There are times in the history of our nation when our very way of life depends upon dispelling illusions and awakening to the challenge of a present danger. In such moments, we are called upon to move quickly and boldly to shake off complacency, throw aside old habits and rise, clear-eyed and alert, to the necessity of big changes. Those who, for whatever reason, refuse to do their part must either be persuaded to join the effort or asked to step aside. This is such a moment. The survival of the United States of America as we know it is at risk. And even more - if more should be required - the future of human civilization is at stake.

While the arguments rage on both sides, the experts say that time is running out For the workers at Oldbury-on-Severn nuclear power plant, the next new year celebrations could be rather poignant. Just as Britain is planning the rebirth of nuclear power generation, their ageing plant will be closing down, probably on December 31. Oldbury, in Gloucestershire, has been pouring power into the national grid since 1967 and is the latest in a series of closures that has seen Britain's nuclear generating capacity fall from nearly 40% of the nation's needs in the 1980s to just 15% now. Most of the slack has been taken up by new gas-fired stations.