CNN meteorologist Haley Brink revealed that the fires were “definitely human-induced,” and since her statement, the Brazilian government issued a burning ban. Despite the ban, almost 4,000 fire outbreaks have occurred over the past two days.

Researcher Alberto Sezter, like Brink and McRae, seeks to eliminate the popular belief that the fires began due to the current dry season in the Amazon. Setzer is a researcher with Brazil’s National Institute for Space Research (INPE).

“The dry season creates favorable conditions for the use and spread of fire, but starting a fire is the work of humans, either deliberately or by accident,” Setzer told Reuters news agency.

Millions of animals call the rainforest home, and environmentalists are worried about their safety. As the fires blow through, they are eliminating habitats in their wake.

“Animals can move so it’s not those who are actually caught in the fires that I am most concerned about,” McRae said. “It’s the loss of habitat. When the fires are gone, even if the animals have successfully escaped, one of the few survivors come back to, what?”

Animals are not the only ones suffering from the burning of the forest. With the burning of trees comes the accretion of carbon dioxide. The Amazon Rainforest plays a key role in the absorption of carbon dioxide, but since the fires have started, the forest is failing in its role as a CO2 sponge.

“Climate change is driven by this increase in CO2 in our atmosphere,” McRae said, “and photosynthesis, which is what plants use to grow into their bodies, literally pulls CO2 out of the atmosphere to build the bodies of those plants—including trees. It stays in the bodies of those plants for as long as they are alive.”

McRae’s biggest concern does not involve the massive release of carbon dioxide but instead the loss of biodiversity.

“Personally, the biggest loss and the problem I see coming from it, as far as the earth and natural systems, is the loss of biodiversity,” McRae said. “The Amazon is not one continuous big habitat. It would be very easy in a fire this big to have some of those sub habitat types that are unique and don’t grow other places to hit a tipping point where, after the fires, they can’t fully recover without massive external help. Whatever grows back is something that’s fundamentally different.”