Hydroelectric dams emit a billion tonnes of greenhouse gases a year, study finds

Impact of dams on climate change has been underestimated, researchers warn, as rotting vegetation creates 25% more methane than previously thought

Hydroelectric dams contribute more to global warming than previously estimated, according to a study published in BioScience.

It appears that the current and planned boom of hydroelectric projects would double the current cover of dams in the world and will aggravate the problem.