FAA bans drone flights near major US landmarks
The Federal Aviation Administration is banning drone flights within 400 feet (122 meters) of several national landmarks, including the Statue of Liberty and Mount Rushmore.
Engineering
Sep 29, 2017
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Page 25 - News tagged with dam
The impacts of a chemical reaction known to cause structural problems in concrete dams
When the Mactaquac Dam opened in New Brunswick, Canada, in 1968, it was expected to have a service life of 100 years, but a chemical reaction occurring within the concrete used to build the dam has drastically shortened that ...
Engineering
Sep 14, 2017
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381 new species discovered in the Amazon
A new WWF and Mamirauá Institute for Sustainable Development report, released on 30 August, reveals that a new animal or plant species is discovered in the Amazon every 2 days, the fastest rate to be observed this century. ...
Environment
Aug 31, 2017
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Potential impacts of planned Andean Amazon dams outweigh benefits, scientists say
An international team of scientists investigating the effects of six planned or potential Andean dams on the Amazon river system has found that major negative ecological impacts can be expected both above the dams and throughout ...
Environment
Aug 24, 2017
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Study finds climate plays role in decline of one of Asia's most critical water resources
Climate variability—rather than the presence of a major dam—is most likely the primary cause for a water supply decline in East Asia's largest floodplain lake system, according to a Kansas State University researcher.
Environment
Aug 3, 2017
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3-D models help scientists gauge flood impact
Heavy rainfall can cause rivers and drainage systems to overflow or dams to break, leading to flood events that bring damage to property and road systems as well potential loss of human life.
Environment
Jul 18, 2017
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Lebanon dam planned atop fault line stirs fears
Lebanon's government says a dam planned for a valley near Beirut is vital to tackle chronic water shortages, but the location on a seismic fault line has raised fears among residents.
Environment
Jun 29, 2017
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Fish should figure in to fate of nation's aging dams
As nearly 75 percent of the nation's largest dams approach the high maintenance years, safety and economics figure large in decisions to fix or replace. A recent study by Michigan State University (MSU) researchers makes ...
Environment
May 10, 2017
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Large freshwater species among those most threatened with extinction on the planet
Freshwater megafauna such as river dolphins, crocodilians and sturgeons play vital roles in their respective ecosystems. In a recent scientific publication, researchers of the Leibniz-Institute of Freshwater Ecology and Inland ...
Ecology
Mar 15, 2017
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Two dams illustrate challenge of maintaining older designs
Twelve years ago, widespread destruction from Hurricane Katrina on the Gulf Coast helped compel federal engineers 2,000 miles away in California to remake a 1950s-era dam by constructing a massive steel-and-concrete gutter ...
Environment
Feb 19, 2017
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