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Smoke billows from the Amazon Rainforest. Photo: Dado Galdieri / AP

This year is on track to be the worst on record for forest fires in the Amazon, per the Brazilian government. The fires are doing the most damage in the areas of the forest already hit by human-caused forest degradation, Mongabay reports.

  • Distinct from deforestation, forest degradation is the process of felling just the valuable trees in a forest and leaving behind flammable tree limbs and debris, creating a ground zero for wildfires.
  • Why it matters: Climate change, deforestation and forest degradation are causing mega-fires that are devastating large swathes of the Amazon rainforest. Carbon emissions from the fires have the capacity to impact climate around the world.

The details:

  • The Amazon is currently experiencing a prolonged drought — lasting up to four months in some parts — which is contributing to the spread of the fires. And "the dry seasons in Brazil seem to be becoming drier and more frequent," scientist Luiz Aragão told Mongabay.
  • As of October 5, 208,278 hot spots have been seen in the region using thermal sensing. Fire brigades lack the manpower and resources to control them.
  • Forest degradation has transformed the Amazon from a carbon sink to a carbon source. Meanwhile, the uptick of carbon emissions around the world are contributing to bigger fires globally. The concurrent trends comprise a recipe for more mega-fires, scientists say.
  • "If Brazil is to have a chance at controlling the intensity of fires in the Amazon, it needs all countries — including the U.S. — to successfully reduce carbon emissions," Mongabay reports.

Go deeper

Biden Cabinet confirmation schedule: When to watch hearings

Joe Biden and Kamala Harris on Jan. 16 in Wilmington, Delaware. Photo: Angela Weiss/AFP via Getty Images

The first hearings for President-elect Joe Biden's Cabinet nominations begin on Tuesday, with testimony from his picks to lead the departments of State, Homeland and Defense.

Why it matters: It's been a slow start for a process that usually takes place days or weeks earlier for incoming presidents. The first slate of nominees will appear on Tuesday before a Republican-controlled Senate, but that will change once the new Democratic senators-elect from Georgia are sworn in.

Kamala Harris resigns from Senate seat ahead of inauguration

Vice President-elect Kamala Harris. Photo: Mason Trinca/Getty Images

Vice President-elect Kamala Harris submitted her resignation from her seat in the U.S. Senate on Monday, two days before she will be sworn into her new role.

What's next: California Gov. Gavin Newsom has selected California Secretary of State Alex Padilla to serve out the rest of Harris' term, which ends in 2022.

3 hours ago - World

Putin foe Navalny to be detained for 30 days after returning to Moscow

Russian opposition leader Alexey Navalny. Photo: Oleg Nikishin/Epsilon/Getty Images

Russian opposition leader Alexey Navalny has been ordered to remain in pre-trial detention for 30 days, following his arrest upon returning to Russia on Sunday for the first time since a failed assassination attempt last year.

Why it matters: The detention of Navalny, an anti-corruption activist and the most prominent domestic critic of Russian President Vladimir Putin, has already set off a chorus of condemnations from leaders in Europe and the U.S.