When will the Amazon hit a tipping point?

Last year, deforestation in Brazil spiked by around 30% to almost 10,000 km2, the largest loss in a decade. In the face of a warming climate, increased deforestation and fiercer fires, scientists are more worried than ever about the Amazon.

Earlier this month, more than 1,000 scientists signed an open letter warning that “the administration of president Jair Bolsonaro is dismantling the country’s social–environmental policies”. “It’s an emergency situation,” says Adriane Esquivel Muelbert, an ecologist at the University of Birmingham, UK, and one of the letter’s signatories. “We can fix this, but we need to act now.”

Scientists say climate change, deforestation and fires could cause the world’s largest rainforest to dry out. The big question is how soon that might happen.

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