As the summit in France wrapped up, Brazil's far-right president tweeted that the international alliance treats his country "as if we were a colony or no man's land."
In a tweet, the French president called the 2,500 active fires in the Amazon an "international crisis" and urged fellow G-7 members to "discuss this emergency first order" at their upcoming summit.
Researchers say there's been a huge rise in the number of fires compared with last year. That's likely linked with a similar leap in deforestation since President Jair Bolsonaro took office.
About a month ago, the Brazilian government said miners would get access to an expanse of rain forest larger than Denmark. After public resistance and a legal setback, it reversed course Monday.
Ivo Cassol is a prominent Brazilian politician who made his money in cattle ranching and logging in the Amazon. He says the world should pay Brazil a lot more if it wants to preserve the rain forest.
Recent scientific discoveries show the Amazon might control the climate for much of South America. The theory could point to potentially disastrous ramifications if deforestation continues.
Gregory Asner has loaded a plane with lasers, spectrometers and computers to create models so detailed, they distinguish between and count plant species in even the densest biomes, like the Amazon.