Amazon drought sparks fears of climate tipping points

One of the world’s largest rivers and a major tributary of the Amazon, the yawning Rio Negro is a pillar of the rainforest ecosystem that is crucial to the stability of the global climate. But vast sections of the waterway are currently dry.

For weeks, an unprecedented drought has pummelled the region, reducing water levels in key Amazonian arteries to record lows and wreaking havoc on local communities and the unique wildlife of the biome.