How the world's rivers are changing

The way rivers function is significantly affected by how much sediment they transport and where it gets deposited. River sediment—mostly sand, silt, and clay—plays a critical ecological role, as it provides habitat for ...

Rare 'orchid of the falls' species declared extinct in the wild

A team of botanists from Guinea and the Royal Botanic Gardens, Kew in the UK have sounded the death knell for a plant in the Saxicolella genus that is endemic to a single location in Guinea. The sad discovery was made by ...

Researchers lay out a path to saving the Mekong Delta

Nearly 20 million people live in Southeast Asia's Mekong Delta, which is also the source of 7–10% of internationally traded rice. But the delta will be nearly entirely underwater by the end of the century if water management ...

How hydropower dams impact the communities they're built in

Over the last two decades, almost 1,000 hydropower dams have been built around the globe. And while these dams provide many benefits to farmers, wildlife and the climate, the costs of their construction on local communities ...

Newly released data show how fish pass through dams

Scientists at Pacific Northwest National Laboratory (PNNL) have released a unique data set containing more than 5 million raw data points on the movement, behavior, and location of juvenile Chinook salmon as they traveled ...

Dams ineffective for cold-water conservation

Dams poorly mimic the temperature patterns California streams require to support the state's native salmon and trout—more than three-quarters of which risk extinction. Bold actions are needed to reverse extinction trends ...

Dam strength determined by balanced rocks

Balanced rocks, poised in position for 24,000 years, have been used to assess the current seismic integrity of the Clyde Dam in a University of Otago-led study.

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