News tagged with hydroelectric dams

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Venezuela turns to cloud-seeding to battle drought (AP)

Venezuela turns to cloud-seeding to battle drought

Space & Earth / Earth Sciences

created Nov 29, 2009 | popularity not rated yet | comments 1

(AP) -- Hugo Chavez says he is starting to "bombard" clouds now that Cuba has provided Venezuela with cloud-seeding help in an effort to produce rain and alleviate the effects of a severe drought.


Northwest salmon recovery plan may include breaching dams

Biology / Ecology

created Sep 16, 2009 | popularity not rated yet | comments 0

In a case closely followed by environmental and business interests, a rewritten plan for restoring endangered and threatened wild salmon runs on the Columbia and Snake rivers in Washington state and Idaho includes studying ...


Efforts to save salmon may be undone by climate change

Biology / Ecology

created May 12, 2009 | popularity 1 / 5 (3) | comments 1

The Pacific Northwest has spent two decades retooling dams, rebuilding damaged watersheds and restoring stream flows to keep salmon from disappearing.


Turning the tide to energy

Turning the tide to energy

Technology / Engineering

created Mar 06, 2009 | popularity 3.5 / 5 (20) | comments 6

NASA researchers who developed a new way to power robotic underwater vehicles believe a spin-off technology could help convert ocean energy into electrical energy on a much larger scale. The researchers hope ...





Search results for hydroelectric dams


Governments turn to cloud seeding to fight drought (AP)

Governments turn to cloud seeding to fight drought

Space & Earth / Earth Sciences

created 17 hours ago | popularity 1 / 5 (2) | comments 2

(AP) -- On a mountaintop clearing in the Sierra Nevada stands a tall metal platform holding a crude furnace and a box of silver iodide solution that some scientists believe could help offer relief from searing ...


White, but not pure

White, but not pure

Space & Earth / Environment

created Dec 07, 2009 | popularity 4.7 / 5 (3) | comments 3

Even the snow on Aconcagua Mountain in the Andes is polluted with PCBs. An international team of researchers detected low concentrations of these toxic, carcinogenic chlorine compounds in samples taken from ...


Global warming may require higher dams, stilts (AP)

Global warming may require higher dams, stilts

Space & Earth / Environment

created Dec 03, 2009 | popularity 3.8 / 5 (9) | comments 6

(AP) -- With the world losing the battle against global warming so far, experts are warning that humans need to follow nature's example: Adapt or die.


Researchers look at water-energy impacts of climate change

Space & Earth / Environment

created Dec 01, 2009 | popularity 4 / 5 (4) | comments 1

(PhysOrg.com) -- Climate projections for the next 50 to 100 years forecast increasingly frequent severe droughts and heat waves across the American Southwest, sinking available water levels even as rising mercury drives up ...


New radar helps monitor site of century-old tragedy

New radar helps monitor site of century-old tragedy

Space & Earth / Earth Sciences

created Nov 27, 2009 | popularity not rated yet | comments 0

(PhysOrg.com) -- A University of Alberta researcher has turned the site of a southern Alberta rockslide tragedy into the proving ground for new equipment meant to avert such a disaster in the future.


In Greenland, warming fuels dream of hidden wealth (AP)

In Greenland, warming fuels dream of hidden wealth

Space & Earth / Environment

created Nov 27, 2009 | popularity 3.5 / 5 (4) | comments 1

(AP) -- Gert Ignatiussen returns to this fjord-front Inuit town with the spoils of his hunting trip. Six seals, all killed with a single shot to the head.


NREL Uncovers Clean Energy Leaders State by State

NREL Uncovers Clean Energy Leaders State by State

Technology / Energy

created Nov 24, 2009 | popularity 3.4 / 5 (5) | comments 2

(PhysOrg.com) -- That California and Texas still lead the United States in generating renewable energy probably is no surprise. But, NREL's 2009 State of the States report shows that several smaller states ...


China is the world's largest emitter of the greenhouse gases blamed for global warming

China harnesses mountain wind power

Technology / Energy

created Nov 22, 2009 | popularity 4.4 / 5 (12) | comments 3

In the mountains above the southwestern Chinese town of Dali, dozens of new wind turbines dot the landscape -- a symbol of the country's sky-high ambitions for clean, green energy.


Rare crocs found hiding in plain sight in Cambodia (AP)

Rare crocs found hiding in plain sight in Cambodia

Biology / Ecology

created Nov 18, 2009 | popularity 5 / 5 (1) | comments 0

(AP) -- Conservationists searching for one of the world's most endangered crocodile species say they have found dozens of the reptiles lounging in plain sight - at a wildlife rescue center in Cambodia.


Salmon migration mystery explored on Idaho's Clearwater River

Salmon migration mystery explored on Idaho's Clearwater River

Biology / Ecology

created Nov 15, 2009 | popularity not rated yet | comments 0

(PhysOrg.com) -- Temperature differences and slow-moving water at the confluence of the Clearwater and Snake rivers in Idaho might delay the migration of threatened juvenile salmon and allow them to grow larger ...



List of search results for hydroelectric dams