Planned hydropower dams threaten fish in the tropics

Planned hydropower dams will greatly increase threats for freshwater fish species because of habitat fragmentation, especially in the tropics. This was already suspected, but environmental researchers at Radboud University, ...

A damming trend

Hundreds of dams are being proposed for Mekong River basin in Southeast Asia. The negative social and environmental consequences—affecting everything from food security to the environment—greatly outweigh the positive ...

Human actions impact wild salmon's ability to evolve

Once spring-run chinook salmon disappear, they are not likely to re-emerge, indicates genetic analysis of the revered wild fish in a study led by the University of California, Davis. Prompt conservation action could preserve ...

Hydropower, innovations and avoiding international dam shame

For sweeping drama, it's hard to beat hydropower from dams—a renewable source of electricity that helped build much of the developed world. Yet five scientists from Michigan State University (MSU) say that behind roaring ...

Dam problems, win-win solutions

Decisions about whether to build, remove or modify dams involve complex trade-offs that are often accompanied by social and political conflict. A group of researchers from the natural and social sciences, engineering, arts ...

Yangtze dams put endangered sturgeon's future in doubt

Before the damming of the Yangtze River in 1981, Chinese sturgeon swam freely each summer one after another into the river's mouth, continuing upriver while fasting all along the way. They bred in the upper spawning ground ...

page 5 from 40