News tagged with dam
World's biggest beaver dam discovered in northern Canada
A Canadian ecologist has discovered the world's largest beaver dam in a remote area of northern Alberta, an animal-made structure so large it is visible from space.
May 06, 2010 |
4.9 / 5 (26) |
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Researchers map fish species at risk from dams
Dams are believed to be one of the biggest threats to freshwater organisms worldwide: They disrupt normal patterns of water and sediment flow, impede migration, and alter the character of spawning and feeding grounds. A shortage ...
May 10, 2012 |
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Japan eyes solar station in space as new energy source
It may sound like a sci-fi vision, but Japan's space agency is dead serious: by 2030 it wants to collect solar power in space and zap it down to Earth, using laser beams or microwaves.
Technology / Energy & Green Tech
Nov 08, 2009 |
4.8 / 5 (24) |
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Small dams, big impact on Mekong River fish: study
Plans to build hydropower dams along small branches of southeast Asia's longest river could have a devastating impact on millions of people who rely on the world's largest inland fishery, scientists said Monday.
Mar 05, 2012 |
5 / 5 (2) |
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Chile supreme court halts Patagonia dam project
Chile's supreme court has halted construction on the Rio Cuervo hydroelectric project in the country's remote and pristine Patagonia region, after accepting an appeal from environmental groups.
May 13, 2012 |
4 / 5 (4) |
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Worst drought in 50 years takes toll in northern Brazil
Severe drought gripping northeastern Brazil -- the worst in a half-century -- is taking its toll on more than 1,100 towns, even triggering fighting in rural areas, local media reported Sunday.
May 14, 2012 |
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Brisbane dam opposition fostered an 'unusual' alliance, researcher finds
Opposition to a major dam north of Brisbane divided communities and also brought them together, a researcher from The University of Queensland discovered.
May 15, 2012 |
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Governments must plan for migration in response to climate change, researchers say
Governments around the world must be prepared for mass migrations caused by rising global temperatures or face the possibility of calamitous results, say University of Florida scientists on a research team reporting in the ...
Oct 27, 2011 |
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America's new wonder: a record-breaking bridge
America's greatest technological achievement, the Hoover Dam, now has a soaring companion piece, a massive looming bridge held up by the longest arch in the Western Hemisphere.
Oct 17, 2010 |
3.7 / 5 (9) |
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Laos says building of controversial dam on hold
Laos has postponed construction of a controversial dam on the Mekong, an official said Thursday, dismissing fears that the work was going ahead despite growing regional opposition.
May 10, 2012 |
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'Sensing skin' could monitor the health of concrete infrastructure continually and inexpensively
In 2009, the American Society of Civil Engineers (ASCE) assigned the grade "D" to the overall quality of infrastructure in the U.S. and said that ongoing evaluation and maintenance of structures was one of ...
Jun 29, 2011 |
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Large dams can affect local climates, says new study
(PhysOrg.com) -- Large dams could have the potential to significantly alter local rainfall in some regions, according to a team of researchers including Roger Pielke Sr., of the Cooperative Institute for Research in Environmental ...
Feb 10, 2011 |
4.1 / 5 (7) |
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New research questions hydroelectric emissions
Scientists have found that some reservoirs formed by hydroelectric dams emit more greenhouse gases than expected, potentially upsetting the climate-friendly balance of hydroelectric power.
Oct 11, 2010 |
3 / 5 (8) |
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Another dam project approved for Patagonia: official
An environmental review commission Tuesday approved construction of another hydroelectric project in Chile's remote and pristine Patagonia region, an officials said.
May 08, 2012 |
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Turning the tide to energy
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 ...
Mar 06, 2009 |
3.3 / 5 (23) |
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Dam
A dam is a barrier that impounds water or underground streams. Dams generally serve the primary purpose of retaining water, while other structures such as floodgates or levees (also known as dikes) are used to manage or prevent water flow into specific land regions. Hydropower and pumped-storage hydroelectricity are often used in conjunction with dams to provide clean electricity for millions of consumers.
For more information about Dam, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
