Study says algae biofuel has dirty life dycle

Algae has seemed like a great biofuel candidate because it's extremely efficent at creating energy from sunlight and it could potentially form closed loops for power plants - absorbing exhaust while creating new fuel -- but a recent study has knocked algae off its pedestal.

University of Virginia researchers have found that the life cycle of algal biofuel produces high levels of greenhouse gas emissions -- much more than it sequesters.

The culprit is the large amount of fertilizer used to produce the algae.  The fertilizers come from petroleum-bases sources and emit nitrous oxide.  The researchers propose using fertilizer from sewage plants as a way around the problem.

It looks like we're still far away from an ideal biofuel, if there is one.

via Yale e360

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Energy-efficient homes: Cheaper to own, more expenive to buy. Why?

EAST LANSING, Mich. -- Krista and Micah Fuerst were looking near here to buy their first place together, and had narrowed it down to two houses: One built 25 years ago, the other brand new and built to strict energy efficiency standards. The couple's choice was easy: They picked the Energy Star home, which the U.S. had certified because it will use about one-fifth to one-third less energy than a comparable home. But they're in the minority. Most homebuyers don't think about the ongoing costs of home ownership beyond the mortgage and taxes; using energy costs, too. And fewer still think about the pollution that energy use creates, but home energy use accounts for 16 percent of U.S. greenhouse gas emissions. The proportion of newly built Energy Star homes is growing, but still only represents 20 percent of new homes built in 2009, according to Sam Rashkin, national director of the Home Energy Star program. Despite the slow increase in newly built efficient homes, some 99 percent of existing houses are "sick" -- damp, drafty, dusty, noisy and expensive to heat and cool. They "could be made at least 30 percent more energy-efficient with highly cost-effective, tried-and-true energy-efficiency improvements," according to Rashkin. A 30% reduction in energy use is a 30% reduction in home energy costs; newly built Energy Star homes have, since 1995, saved homeowners an estimated $1.2 billion. The Energy Star program won't fix those old houses. Energy Star designations go to the cream of the housing stock; if just one in five new homes meets these standards, far fewer renovations do. So if energy efficient homes cost homeowners less and pollute less, why aren't they more commonplace? Experts say economics and regulations are the root of the problem: Mortgages are structured in ways that fail to recognize the benefits of energy efficiency, while a patchwork of inconsistent and ill-enforced energy codes provides conflicting signals to industry. Meanwhile consumers remain largely unaware of efficiency's advantages, advocates say, thereby bypassing an easy target for considerable cuts in national carbon emissions -- and home energy bills. In this sense the Fuersts are typical of many homebuyers. Both in their late twenties, the Fuersts were aware of Energy Star-rated appliances, but didn't know the label also applied to homes, said Krista Fuerst, a childcare director. Their home, which wouldn't stand out in any new subdivision, and they mostly just wanted a place big enough to raise a family. They traded slightly longer commutes for smaller energy bills and freedom from costly renovations. "We're certainly conscious of the environment," she explained, "but we're not hyper-conscious. We're not extreme green." Of course, the ultra-efficient heating and cooling systems, high-performance windows and other features that make the homes exceptionally comfortable also make them a bit pricier. The added cost for a new Energy Star home may only be about the price of a night at the movies on each month's mortgage payment, but it's enough to scare off many potential buyers. "It's an incredibly smart choice," Rashkin said, since smaller utility bills more than offset the higher price. "But consumers are overwhelmed by first cost."

Energy-efficient mortgages

To get buyers over that hump, a handful of specialized mortgage options have for decades given buyers more cash Read more  Print This Post

Recycle your old phones and help Haiti quake victims

Like me, you've probably been watching the coverage of the earthquake in Haiti with a big knot in your stomach and maybe you've already donated $10 by texting HAITI to 90999, but if you want to do more (and help out the environment while you're at it), there's an easy way to do so.

ReCellular has launched a disaster relief program for the victims of the earthquake called "Phones for Haiti." All proceeds from donated phones will go straight to the American Red Cross for their work in the country.

If you're like most people you have an old cell phone lying around somewhere and this is a great way to donate to those in need and keep your electronic waste out of a landfill at the same time.  ReCellular refurbishes the donated phones and then sells them to people in developing countries.  Some phone models like Blackberries or iPhones could contribute up to $100 to the Red Cross.

ReCellular also accepts your old chargers, batteries and other accessories and the shipping is free.  Click here to get started.

via Inhabitat

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