The 2015-16 El Niño briefly turned Amazon, African and Indonesian tropical forests from carbon sink to carbon source. Will climate change make that shift permanent?
Nearly 100,000 small hydropower dams exist or are planned worldwide, and science has done little to study or inform policymakers about cumulative environmental impacts.
Habitat fragmentation and biomass reduction on isolated forest islands at the Balbina dam – with trees replaced by lianas – resulted in increased carbon emissions.
