World's ageing big dams pose 'emerging risk': UN

By 2050, more than half the global population will live downstream from tens of thousands of large dams near or past their intended lifespan, according to a UN report released Friday.

More than 1 million barriers on Europe's rivers: study

More than 1.2 million barriers criss-cross Europe's rivers—nearly twice as many as previously thought—threatening some of the world's most diverse ecosystems, new research showed Wednesday.

Historic deal revives plan for largest US dam demolition

An agreement announced Tuesday paves the way for the largest dam demolition in U.S. history, a project that promises to reopen hundreds of miles of waterway along the Oregon-California border to salmon that are critical to ...

Five questions about Ethiopia's controversial Nile dam

Ethiopia said this week it had hit its first-year target for filling the Grand Ethiopian Renaissance Dam, a concrete colossus 145 metres (475 feet) high that has fuelled tensions with downstream nations for nearly a decade.

Hydropower dams can harm coastal areas far downstream

Thousands of hydroelectric dams are under construction around the world, mainly in developing countries. These enormous structures are one of the world's largest sources of renewable energy, but they also cause environmental ...

Attacks on Brazil's ecological paradises threaten biodiversity

Brazil is home to more than half of the world's plant and animal species, but its ecological paradises are facing growing threats from agriculture and mining lobbies who have found a champion in far-right President Jair Bolsonaro, ...

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