Aug 18, 2009 | 13
Mining is the second most dangerous occupation in the U.S., averaging roughly 27 deaths for every 100,000 workers per year. That's nearly nine times higher than the overall fatality rate for U.S. industry as a whole, according to data from the U.S. Census Bureau (pdf).
So it stands to reason that energy derived from renewable resources such as the sun and wind might cause fewer workplace deaths than energy industries—coal, oil and natural gas—that rely on mining, drilling and otherwise extracting fossil fuels. And that's exactly what doctors from Medical College of Wisconsin and Duke University Medical Center found in an analysis published in JAMA The Journal of the American Medical Association on August 19.
Aug 10, 2009 | 2
A large, coal-burning utility in the U.S. and another in China have agreed to cooperate to develop methods to more cleanly burn coal, including so-called carbon capture and storage technology. Duke Energy will partner with China's Huaneng Group to further develop and build technologies to gasify coal and strip it of its impurities, including the carbon dioxide that would otherwise be released into the atmosphere from coal burning. As it stands, Huaneng releases some 285 million metric tons of CO2 per year while Duke emits 112 million metric tons, according to data from the Center for Global Development, a Washington, D.C.-based thinktank.
"We find ourselves at a pivotal point in world history," said Duke Energy CEO Jim Rogers in a statement announcing the partnership. "China has committed to rapidly developing clean-energy technologies, as has the U.S.… Working together, the U.S. and China can commercialize and drive down the cost of these technologies for the benefit of the entire world."
Dec 19, 2008 | 11
Reproductive health and enviro activists are fuming over two more last-minute rule changes by the outgoing Bush administration: a new reg that allows heathcare workers to nix treatments to which they have moral objections, and another one that bars regulators from taking into consideration a power company's climate change–causing greenhouse gas emissions when applying for a license to build new coal-fired plants.
Both rules are set take effect a month from now—just hours before Pres. Bush vacates the White House and President-elect Barack Obama is sworn in to office on Jan. 20.
Dec 8, 2008 | 1
American research firm SRI International and Japan's Hyper Drive Corporation today are testing the latest generation of their jointly developed buoy-mounted, ocean wave-powered generator off the coast of Santa Cruz, Calif. As the generator bobs up and down, an accordionlike device inside, made of artificial muscle called Electroactive Polymer Artificial Muscle (EPAM), stretches and contracts, creating mechanical energy that is converted into electricity.
SRI is hoping to demonstrate its ability to generate at least 10 Watts of power in waves about 3.3 feet (one meter) in height, a stepping stone to the 100-Watt capacity the researchers hope to be able to generate within a few years. One of their goals is to replace the 25-Watt batteries that navigation buoys use today with a source of renewable energy that can power additional equipment such as cameras and storm warning sensors.
Aug 28, 2008 | 10
The U.S. electric grid is so old and outdated it can't handle the influx of wind power and other intermittent renewable resources. Integrating such sources requires adapting a system that is finely tuned to balance the amount of electricity being used with the amount of electricity being generated with fickle winds.
But there is an even more pressing problem, according to this article in the New York Times: the grid isn't big enough. The wind tends to blow strongest in places, such as North and South Dakota, that are far from where people live and use electricity. And no one wants to spend the millions of dollars it would take to put in a new transmission line (not to mention the legal headache of getting all those rights of way).
Deadline: Jun 29 2013
Reward: $7,000 USD
The Seeker for this Challenge desires proposals for chemical methods that could rapidly degrade a dilute aqueous solution
Deadline: Jun 30 2013
Reward: $1,000,000 USD
This is a Reduction-to-Practice Challenge that requires written documentation and&
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