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Algae could be used as a biofuel while simultaneously cleaning up the environment, report researchers at the University of Virginia. By feeding algae extra carbon dioxide - the principle greenhouse gas contributing to climate change - and organic material like sewage, environmental engineering professors Andres Clarens and Lisa Colosi believe they can boost algae oil yields to as much as 40 percent by weight, far in excess of what can be generated from soybeans.

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.

A report by the group ForestEthics estimates that destroying forests to make paper for junk mail releases as much greenhouse gas pollution as 9 million cars. Another way to look at it: Junk mail produces as much pollution as seven U.S. states combined, or as much as heating 13 million homes each winter. While the estimates may or may not be accurate, the point is indisputable: Junk mail is a waste. (To most people, it's an annoying part of the trip to the mailbox, anyway.)

If ever there was a car made for the times, this would seem to be it: a sporty subcompact that seats five, offers a navigation system, and gets a whopping 65 miles to the gallon. Oh yes, and the car is made by Ford Motor (F), known widely for lumbering gas hogs.

For coal, the future of both extraction and consumption depends on new technology. If successfully deployed, innovative technologies could enable the use of coal that is unminable by gasifying it underground; reduce coal's carbon emissions; or allow coal to take the place of natural gas or petroleum. Without them, coal simply may not have much of a future. Are these technologies close to development? Are they economical? Will they work?

Solar energy will cost the same as power produced by coal, natural gas and nuclear plants in about a decade, a report released today suggests. By then, the price parity could propel solar adoption so that it accounts for 10 percent of U.S. electricity generation by 2025.

Hydrogen Garage LLC is just what it says : "a garage operation". Garage to Garage. An online business selling parts to make home made hydrogen cells, parts, circuits, etc. for the home mechanic/technical /experimenter. We do NOT sell consumer products, only parts for the genius in you. A simple add onto your existing vehicle and or gas powered generator. Might as well sell something that helps clean our car's emission, save MPG and clean up your engine and create more horsepower and help stop Global Warming from too much carbon monoxide posioning. Way better product that some of the stuff that people can sell online today. The more the exposure of "on board electrolysis" the better.

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.

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.

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.

Converting livestock manure into a domestic renewable fuel source could generate enough electricity to meet up to three per cent of North America's entire consumption needs and lead to a significant reduction in greenhouse gas emissions (GHGs), according to new research.

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.

Dubbed the "missing greenhouse gas," nitrogen trifluoride (NF3) was found by a recent study to have a global climate impact 17,000 times greater than carbon dioxide. The chemical is found in the LCD panels of cell phones, televisions, and computer monitors, as well as in semiconductors and synthetic diamonds. The chemical is not one of the greenhouse gases monitored by the Kyoto Protocol, due to the fact that LCDs were not produced in significant quantities when it was drafted.

The Bush administration yesterday unveiled but immediately disparaged a proposal to seek public comment on whether the government should regulate greenhouse gas emissions under the Clean Air Act, declaring at the outset that the proposed approach would be unworkable.

The UK government's renewables consultation called for a green revolution in energy. In doing so, it created a perfect tabloid rod for its own back. The proposed cost-to-consumer calculated by the Department of Business were based on the vanishingly unlikely prospect of an oil price as low as $70 a barrel in 2020. Expected additions to UK energy bills, at that oil price, would be 10-13% for electricity and 18-37% for gas, the government said.

Use the right energy for the right use. That concept lies at the core of a U.S. domestic energy plan unveiled Tuesday by legendary oilman T. Boone Pickens. The United States uses close to $700 billion in foreign energy supplies, primarily oil, Pickens pointed out on CNBC's "Squawk Box." It will be impossible for one energy source to totally replace that supply, he noted.

EAST AMWELL, N.J.-Mike Strizki has not paid an electric, oil or gas bill-nor has he spent a nickel to fill up his Mercury Sable-in nearly two years. Instead, the 51-year-old civil engineer makes all the fuel he needs using a system he built in the capacious garage of his home, which employs photovoltaic (PV) panels to turn sunlight into electricity that is harnessed in turn to extract hydrogen from tap water.

In a ruling believed to be unprecedented, a Georgia judge halted the construction of Dynegy's Longleaf coal-fired power plant because it had not made provisions for reducing its emissions of carbon dioxide, the greenhouse gas most widely implicated in man-made global warming.

Wind supplied more of Britain's electricity that water for the first time last year, while power generators preferred gas to coal and nuclear output continued to decline, according to new government data. Five percent of Britain's electricity came from renewable sources in 2007, up from 4.6 percent in 2006, as more wind farms started feeding clean electricity into the network, helping cut the country's carbon emissions.