The estimate comes from scientists who examined the number of carcasses they found up to 48 hours after a fire event. The rate of climate change makes such wildfires inevitable, they say.
More than a hundred countries just promised to protect and restore forests. Similar pledges in the past have not succeeded, but forest advocates hope that this effort can learn from past mistakes.
The White House wants to boost global commitments to human rights and fighting corruption. But as the summit convenes, American democracy itself is under pressure.
Deforestation in the region rose 22% compared to the year prior, according to data released just days after Brazil made new global promises to combat environmental degradation.
A Senate panel recommends a number of other charges against the Brazilian president, including inciting an epidemic. But the chances that Jair Bolsonaro will be indicted look slim.
So far, the president's trip to New York City for the United Nations General Assembly appears to be anything but a success for Brazil or the country's image after a series of blunders early this week.