29 Aug 2014:
New Database Tracks Ecological
Health Impacts of Dams on World's Rivers
A newly launched online database
illustrates the impacts of nearly 6,000 dams on the world's 50 major river basins, ranking their ecological health according to indicators of river fragmentation, water quality, and biodiversity. The "State of the World's Rivers" project was developed by the advocacy organization International Rivers
and created using Google Earth. Users can compare the health of individual river basins, see the locations of existing and planned dams, and explore 10 of the most significant river basins in more depth. For example, as this map of China's Yangtze basin shows, at least 374 dams already exist in the basin, and at least another 167 are under construction or planned to be built. The ecological health of the region
is showing signs of collapse, the database entry says: A 2014 study
found that fish species in the Yangtze drastically decreased from 143 to 17 over the course of one year, due to overfishing and dam construction. The 6,000 dams represented in the database are a small percentage of the more than 50,000 large dams that impact the world's rivers, the organization notes.
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Tribal people and ranchers join together to stop a project that would haul coal across their Montana land. Watch the video.
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The 2015 Yale e360 Video Contest winner documents a Northeastern town's bitter battle over a wind farm. Watch the video.
A 2015 Yale e360 Video Contest winner captures stunning images of wild salmon runs in Alaska. Watch the video.
video series looks at the staggering amount of food wasted in the U.S. – a problem with major human and environmental costs. Watch the video.
video goes onto the front lines with Colorado firefighters confronting deadly blazes fueled by a hotter, drier climate. Watch the video.
A three-part series Tainted Harvest
looks at the soil pollution crisis in China, the threat it poses to the food supply, and the complexity of any cleanup. Read the series.