What tree rings reveal about climate change in the Amazon

What tree rings reveal about climate change in the Amazon

In 2024, the Amazon region felt the effects of one of the worst droughts in its recorded history — if not the worst. At the port of Manaus, the largest city along the course of the Amazon River, the water level reached 12.68 meters (41.60 feet), the lowest level since measurements began there in 1902. It was even worse than in 2023, when high temperatures in Lake Tefé, upstream of Manaus, killed river dolphins. Successive years of record heat an…