Women are passionate advocates for sustainable food and farming and have been changing the way America eats and farms for decades. Farmer Jane tells 30 such stories of some exceptional women leaders that are working on this change by farming, educating, advocating, and/or transforming how we eat through their food businesses.

The process, Current says, lets a utility more efficiently manage the distribution of electricity by allowing two-way communication between consumers and energy suppliers via the broadband network on the power lines. Based on data they receive from hundreds of homes, utilities can monitor usage and adjust output and pricing in response to demand. Consumers can be rewarded with reduced rates by cutting back on consumption during peak periods. And computerized substations can talk to each other so overloaded circuits hand off electricity to underused ones, helping to prevent blackouts.

An energy company in Israel plans to launch a solar farm this month using new technology it says can produce cheap and efficient electricity while supplying hot water to homes. As with all solar energy systems, investors and consumers may be turned off by high initial costs and the need for strong sunlight. But if the commercial pilot works, Israeli start-up ZenithSolar plans to make small units for homes in two years.

Earth Eats is a weekly radio program and podcast exploring local food and sustainable agriculture with recipes you can make at home.

The new administration has moved quickly to reverse or delay Bush policy on drilling and pollution.

"What we'd like to do is to make Milwaukee become a national leader in growing fish by creating a large-scale production facility to grow 100 tons of yellow perch, which is a species which has kind of been in decline in the Great Lakes. We'd like to bring it back and satisfy the market for it and at the same time have an educational component so we can show the rest of the country on how they too can grow fish in the city," Bales says.

The global hub for those who cultivate land as guerrilla gardeners. Let's fight the filth with forks and flowers.

Geothermal heat could meet 10 percent of America's energy needs by mid-century, according to the US Department of Energy. What's more, it would not generate the climate-warming carbon emissions associated with fossil fuels.

The type of solar energy capture system you put on your home depends on your needs. If you want to go full tilt and generate usable electricity from your home's rooftop - and even possibly contribute power back to the larger grid - tried-and-true photovoltaic arrays might be just the ticket. A typical installation involves the panels, which are constructed of many individual silicon-based photovoltaic cells and their support structures, along with an inverter, electrical conduit piping, and AC/DC disconnect switches.

After years of false starts, a new industry selling motor fuel made from waste is getting a big push in the United States, with the first commercial sales possible within months.

What [the survey] found was that while respondents expressed concern about their environmental impact, few were willing to smother those concerns with cash. And, in fact, the numbers willing to take a hit to their wallets or to their server performance in order to reduce their carbon footprints were actually lower this year than when the survey was first conducted in 2007.

The molecules, known as fluorocarbons, are found in plastics, clothing and refrigerants. At their heart is a union of carbon and fluorine -- a union that, thanks to their atomic configurations, is one of the strongest molecular unions known in nature. Under standard conditions, fluorocarbons are impervious to acids and bases. They don't give or receive electrons, the very currency of molecular reconfiguration. Breaking them down is possible only at temperatures approaching 2000 degrees Fahrenheit. In some situations, that stability is a blessing: Teflon is made from fluorocarbons. But so are the hydrofluorocarbon coolants in refrigerators and air conditioners -- and when released, those become greenhouse gases that can circulate for thousands of years.

When the builders of the Maple Ridge Wind farm spent $320 million to put nearly 200 wind turbines in upstate New York, the idea was to get paid for producing electricity. But at times, regional electric lines have been so congested that Maple Ridge has been forced to shut down even with a brisk wind blowing. That is a symptom of a broad national problem. Expansive dreams about renewable energy, like Al Gore's hope of replacing all fossil fuels in a decade, are bumping up against the reality of a power grid that cannot handle the new demands.

You may not realize how often you use batteries until you have to operate for a few hours without electricity. Batteries are great at keeping a charge in our mobile devices, but the components that help generate these charges wreak havoc in landfills. You can use Earth911 to find out where to recycle batteries for a number of devices, including your car and cell phone. Here's eight ways to optimize your battery use so you'll create less waste in the first place.

The first of his so-called Democratic Ecology products, a line he is developing in collaboration with Pramac, an Italian industrial group, is to be introduced in Europe this fall, and in the United States early next year. It is a miniature rooftop wind turbine, priced between $780 and $1,250, which Mr. Starck said can produce up to 80 percent of a home's energy.

Chrysler plans to sell either its all-electric sports car or one of two plug-in hybrid models sometime in 2010.

It looks like a scene from an old episode of The X-Files: As a red-tailed hawk circles overhead and a wild pronghorn sheep grazes in the distance, a dozen people in dark sunglasses move methodically through a vast field of golden barley, eyes fixed to the ground, GPS devices in hand. They're searching for bodies. In this case, however, the bodies belong to the endangered blunt-nosed leopard lizard, and the crew moving through the knee-high grain are wildlife biologists hired by Ausra, a Silicon Valley startup that's building a solar power plant for utility PG&E on this square mile of central California ranchland.