(Reuters) – A Web application that alerts wine grape farmers when their vines are thirsty has won first place in a competition to spur entrepreneurs in the investment-starved water sector, organizers said on Monday.

Fruition Sciences, which operates in both California and France, came first among 50 teams in Imagine H2O’s global competition aimed at building a “Silicon Valley” for water.

Water is a $500 billion business worldwide, but draws a mere 0.5 to 1.0 percent of venture capital and only a handful of investments per year despite growing demand for solutions to widespread water shortages. (more…)

Two billion people worldwide do their cooking on open fires, producing sooty pollution that shortens millions of lives and exacerbates global warming. If widely adopted, a new generation of inexpensive, durable cook stoves could go a long way toward alleviating this problem.

With a single, concerted initiative, says Lakshman Guruswami, the world could save millions of people in poor nations from respiratory ailments and early death, while dealing a big blow to global warming — and all at a surprisingly small cost.

“If we could supply cheap, clean-burning cook stoves to the large portion of the world that burns biomass,” says Guruswami, a Sri Lankan-born professor of international law at the University of Colorado, “we could address a significant international public health problem, and at the same stroke cut a major source of warming.”

Sooty, indoor air pollution from open wood or other biomass fires has long been linked to health problems and deaths. More recently, scientists have been surprised to learn that black carbon — not only from biomass fires but from dirty diesel engines and other sources — is a far larger contributor to global warming than previously suspected: The dark particles absorb and retain heat close to the Earth’s surface that might otherwise be reflected. (more…)

Wind power generation in Texas is growing so quickly that it is testing the limits of the state’s electrical grid.

The state set a record on March 5 when wind turbines generated 6,272 megawatts of energy, or about 19 percent of the electricity on the state’s main power grid.

That peak far exceeded the 6.2 percent average for wind power in Texas, whose 9,410 megawatts of total wind capacity make it the nation’s wind power leader.

But wind power’s growth poses a critical challenge for the state’s booming wind industry, which includes a 180-megawatt wind farm completed last fall near Corpus Christi in South Texas. (more…)

A recent report in preparation for the 12th International Energy Forum’s ministerial, scheduled in Cancun, Mexico later this month, studies and assesses the potential and limitations of biofuels.

Criticized by the Global Renewable Fuels Alliance (GRFA) as “self serving,” the report suggests that mounting evidence from research and analysis shows that the demise of the fossil fuel era is nowhere in sight and cautions against the widespread adoption of biofuels.

Authored by Claude Mandil, the former executive director of the International Energy Agency, and Adnan Shihab-Eldin, the former acting secretary general of OPEC, the report examines the extent to which biofuels could contribute meaningfully to meeting a substantial portion of future demand in the transportation sector.

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The U.S. Congress is coming under increased lobbying pressure from the algal organizations to extend tax code parity to algae-based biofuels.

The Algal Biomass Organization and members of the Biotechnology Industry Organization are urging Senate Finance Committee chairman Max Baucus (D-MT) and Ranking Member Charles Grassley (R-IA) to adopt an amendment offered to the Tax Extenders Act of 2009 by Sens. Bill Nelson (D-FL), Mike Crapo (R-ID), and Jeff Bingaman D-(NM).

The amendment would ensure algae fuels receive the financial and regulatory benefits available to other advanced biofuel feedstocks and promote the development and commercialization of algae fuels. (more…)

A California-based startup company says it has developed an improved version of the internal combustion engine that boosts gas mileage by more than 50 percent and enabled a prototype vehicle to get 64 miles per gallon on the highway in recent test drives.

Transonic Combustion, backed by Vinod Khosla and other venture capitalists, says it has invented a new fuel injection system that heats and pressurizes gasoline before injecting it into the combustion chamber, placing the fuel in a “supercritical” state that allows for clean and fast combustion. (more…)

The Unstoppable…Solar Lobby?! A skirmish this week in Arizona revealed that the solar industry, while still adolescent, is developing some political brawn. A bill in the state legislature proposed expanding the definition of “renewable” to include nuclear power, a move that would have allowed the state’s lone nuclear plant to fulfill Arizona’s mandate to receive 15% of its electricity from renewables. Solar companies howled, including Suntech Power Holdings, which threatened to cancel its first U.S. factory in Arizona. Days later, the proposal was retired.

Wal-mart to Suppliers: Go Green or Else Wal-mart announced a goal of cutting 20 million metric tons of greenhouse gas emissions from its supply chain by the end of 2015. By using its unparalleled purchasing leverage, Walmart intends to force greener behavior on the part of its vendors, like it or not. (more…)

The most surprising thing about the inaugural ARPA-E summit, held this week outside Washington D.C., is that the conference hall was full of losers. They were inventors, scientists and entrepreneurs who had applied for funding from the U.S. government’s exciting new energy-research organization but had been shot down.

The Advanced Research Projects Agency – Energy received 3,500 proposals, but only accepted 37. That leaves room for some compelling also-rans.

As a consolation prize, some of the most credible finalists got booth space in the exhibit hall. The most visible were those with ambitious plans for “kite power” — harnessing the powerful and consistent winds that blow high off the Earth’s deck.

Kite energy is way out there, both physically and in the public mindset, and it can be a hard sell, even to an agency like ARPA-E that funds risky projects. Who wants to put their money on the line for a four-rotor helicopter the size of a 747 that’s suspended several kilometers in the air? (more…)

U.S. Energy Secretary Steven Chu said on Friday that the United States needs to come up with a better system for storing or disposing of radioactive nuclear waste than a planned repository near Las Vegas.

“The president has made it very clear that we are going to go beyond Yucca mountain. You should go beyond Yucca mountain,” Chu said. “But instead of wringing my hands, let’s go forward and do something better.”

The Obama administration, in January, announced it was stopping the license application for a long-planned multi-billion dollar nuclear waste storage site at Yucca Mountain near Las Vegas, which is opposed by environmental groups. (more…)

As the climate crisis accelerates, farmers are placed in the ever more precarious position of growing food for an increasing population in the face of increasingly bizarre weather patterns. Weather patterns are shifting due to the increasing amount of energy trapped in our atmosphere by greenhouse gases.

And yet, farming offers the fastest way to slowthe  climate crisis. This is because farmers manage photosynthesis, the biological process within green plants that pulls carbon dioxide out of the atmosphere and stores it in a stable, useful form: organic carbon. Organic carbon is the chemical basis of leaves, shoots, roots, fungi and all the other living things that make up healthy soils.

Good farmers can accelerate this process and pull huge amounts of carbon dioxide from the air into soil organic matter. Increased soil organic carbon can help us manage dry and wet years better by storing water. And the practices that build soil organic carbon require more diverse cropping systems, making farmers (and us) less reliant in any one crop. (more…)