By John DeFore

Americans who’ve seen Pedro Almodóvar’s celebrated film Volver may not be surprised to hear that, on some days, Spain gets a third of its energy from wind power: A number of that film’s scenes feature star Penélope Cruz driving through vast fields of white turbines driven by an East wind that plays a crucial part in the story.

Now a researcher at Spain’s Public University of Navarre has patented two new approaches to a problem plaguing wind generators: voltage dips.

As a news release here puts it, the kind of temporary power disruptions that can cause your living room lights to flicker can do a lot more to the mechanisms in a wind turbine. “In fact,” it says, “an interruption of half a second in a productive process can cause the whole process to block and it may have to be reinitiated.” For wind generators, “the electronic part of the unit can burn out or otherwise be destroyed, unless a protection system is installed.”

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By Harriet Blake

Other than the intoxicating smell of new text books and notebooks, the familiar scents of back-to-school may be changing. Ammonia-scented hallways, newly sealed and fuming gym floors, odorously painted classrooms as well as lawns with the subtle scents of pesticide treatments, may be a thing of the past.

In today’s more environmentally conscious world, public and private schools are rethinking how they maintain their buildings. Reducing toxic chemicals in schools – as in our homes — is not only good for the environment, but for those who use these buildings.

In Maryland’s Montgomery County outside of Washington D.C., the public schools have long taken a pro-active approach in using non-toxic cleaners.

“We want our buildings to be clean and at the same time healthy for our students, faculty and the person doing the cleaning,” says Larry Hurd, building services trainer for the school district.

Ten years ago, the district, which oversees 200 schools, changed from an oil-based sealer for their wood gym floors to a water-based sealer. It works well, says Mr. Hurd, and toxins are no longer an issue. “The oil-based sealer was bad for the students and other visitors to our schools, but it was real, real bad for the person applying the sealer.” That person was exposed to the sealer fumes for as much as four hours.

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By John DeFore

With the locavore ideal so much in the media these days and produce of vague origin sparking so many health scares, you’d think the last thing a city would go out of its way to do would be discourage local growers. Especially if those growers are adorable little girls.

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By Barbara Kessler

Hazardous chemicals are on hiatus, bottled water is out and bikes are in at the Democratic Convention in Denver, where organizers are seizing the opportunity to green the festivities this week.

As some 10,000 delegates, volunteers, politicos and media people converge on the Mile High city, they’ll be quenching their thirst at “hydration stations” or water fountains serving Denver tap water (inside and outside the Pepsi Center) instead of grabbing the once ubiquitous and landfill-clogging plastic water bottles that have been the norm at big gatherings.

Yes, what’s old is new again, and conventioneers have already been drinking from the well, so to speak, at weekend events where the non-profit water utility Denver Water provided a truck of chilled agua to refill water bottles. The new approach has been “incredibly well received” by those attending the pre-Convention activities, said Donna Pacetti, the local government conservation coordinator with Denver Water. “They love it. It’s cold water. We keep it chilled so it comes out at about 38-40 degrees.”

Convention goers also will find themselves with another back-to-basics choice, with 1,000 bicycles available free-of-charge for short carbon-free hops around top, courtesy of Humana and the Bikes Belong Coalition.

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By Barbara Kessler
In the race for top carbon emissions polluter, the United States is still Number One, but China is sprinting forward and could soon edge into the lead. The current Olympics host nation accounted for a “staggering 57 percent of the growth of emissions” worldwide this century, and will likely surpass the U.S. [...]

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Weather experts are predicting that some 17 Atlantic storms — about seven more than average — will pack enough strength they’ll reach tropical storm strength in 2008, earning the right to be named and carrying the potential to reach hurricane status.
The best guess for the number of hurricanes, according to weather forecasters at the Colorado [...]

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By Shermakaye Bass

When legislators cross party lines and governors publicly plead for water reform, you know the country’s water crunch has reached a new degree of direness.

And yet, some conservationists ask, who’s really listening?

In late July an Opinion column appeared in the Los Angeles Times and other California newspapers. In it, California Gov. Arnold Schwarzenegger, a Republican, and senior U.S. Senator, Dianne Feinstein, a Democrat, attempted to jolt water-hoggers into acknowledging that their state is in a full-blown water crisis.

The unlikely duo delivered frightening news: California’s largest reservoir, the Shasta Reservoir, is operating at only 48 percent capacity this year, and the state’s second largest water storage reservoir, Lake Oroville, has less water to spare than it has in three decades. California’s multi-year drought has allowed wildfires to gobble up more than a million acres this year. And job-loss has become a major factor, they say, noting that in two of the past three years, the Pacific salmon fisheries (which impact tens of thousands of jobs) have shut down because there just isn’t enough salmon for fishing.

In light of those facts, you have to scratch your head over why Americans, who consume two to three times the amount of Europeans daily, still squander water, the most essential thing to life itself.

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By Harriet Blake
Mainstream, affordable solar power is not just pie (or energy) in the sky. So say MIT researchers who have devised a process to store solar energy for use when the sun doesn’t shine.

Photo: Donna Coveney
 
MIT professor Dan Nocera
Massachusetts Institute of Technology energy professor Dan Nocera and post-doctoral fellow Matthew Kanan have found a [...]

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By John DeFore

Here’s a mad-scientist fantasy for those who favor controlling carbon as part of the solution to climate change: Learn to love typhoons (well, one aspect of them).
But researchers from Ohio State University have made discoveries about those storms that, as a university report puts it, “could help scientists make better estimates of how much carbon [...]

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By John DeFore

Proposals to solve the planet’s CO2 woes through sequestering the problematic emissions — pumping them into some hole in the ground where they can’t affect the atmosphere — raise numerous concerns for skeptics. Won’t the stuff leak out, wasting the fortune we spent on sequestering, and leaving us worse off than we would [...]

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By John DeFore

Conservation minded farmers might naturally assume it’s wise to get the most out of what’s available; if post-harvest waste material can be used in biofuel production, it seems to make financial and ecological use to sell it.

Not necessarily, according to a scientist at Washington State University who is urging farmers in her region to leave the waste where it falls.

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By Harriet Blake

An engineering team at MIT has developed a new solar concentrator that doubles as a window and generates more electricity with fewer solar cells than typical solar panels — moving toward the day when on-site solar power might make fiscal sense for homeowners.

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