Hydroelectric dams may jeopardize the Amazon's future

Hundreds of built and proposed hydroelectric dams may significantly harm life in and around the Amazon by trapping the flow of rich nutrients and modifying the climate from Central America to the Gulf of Mexico. These findings, ...

Mohawks become first tribe to take down a federal dam

A century after the first commercial dam was built on the St. Regis River, blocking the spawning runs of salmon and sturgeon, the stream once central to the traditional culture of New York's Mohawk Tribe is flowing freely ...

River food webs threatened by widespread hydropower practice

The decline of aquatic insects downstream from some hydroelectric dams has been linked to a widespread practice known as hydropeaking, whereby river flows are increased during the day when electricity demands are large, according ...

Brazil uses dammed lake surface for floating solar panels

Two decades ago, a section of the Amazon rainforest was flooded for a dam that currently produces little electricity. Engineers now see that artificial lake as an ideal surface for floating solar panels.

16th century church emerges from water in Mexico

A 16th century church submerged in a southern Mexico dam project 49 years ago has reappeared following a severe drought, drawing visitors by boat to gaze at the spectacular ruins.

$700 million plan to help salmon habitat faces new challenge

A massive federal habitat restoration effort in the Columbia River Basin has spent more than $700 million on breaching levies, restoring tidal channels, reconnecting floodplains and other actions meant to boost salmon and ...

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