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An aerial view of structures destroyed by wildfire and others spared by fire retardant in Talent, Oregon. Photo: David Ryder/Getty Images

Portland, Oregon, recorded the poorest air quality in the world Tuesday, per IQ Air, as the West Coast wildfires burn across some 5 million acres.

Why it matters: The mega-fires have charred 3,154,107 acres in California, over 1 million in Oregon and more than 807,000 in Washington amid hazardous air conditions. Seattle has the world's third-worst air quality and Los Angeles the seventh, according to IQ Air. The blazes have killed at least 35 people and displaced tens of thousands. Thousands of structures have been destroyed.

Go deeper: In photos: Historic wildfires rage across the West

Editor's note: This article has been updated with more details on the fires and air quality.

Go deeper

Air travel's COVID-created future

Illustration: Aïda Amer/Axios. Photo: Ann Ronan Pictures, Bettmann/Getty Images

A look at the future of air travel as we head into the Thanksgiving holiday week while coronavirus cases are surging and the CDC is urging Americans to avoid travel.

6 hours ago - World

Top general: U.S. losing time to deter China

Stanley McChrystal. Photo: Alex Wong/Getty Images

Stanley McChrystal, a top retired general and Biden adviser, tells Axios that "China's military capacity has risen much faster than people appreciate," and the U.S. is running out of time to counterbalance that in Asia and prevent a scenario such as it seizing Taiwan.

Why it matters: McChrystal, the former commander of U.S. and NATO forces in Afghanistan, recently briefed the president-elect as part of his cabinet of diplomatic and national security advisers. President-elect Joe Biden is considering which Trump- or Obama-era approaches to keep or discard, and what new strategies to pursue.

Progressives shift focus from Biden's Cabinet to his policy agenda

Joe Biden giving remarks in Wilmington, Del., last month. Photo: Roberto Schmidt/AFP via Getty Images

Some progressives tell Axios they believe the window for influencing President-elect Joe Biden’s Cabinet selections has closed, and they’re shifting focus to policy — hoping to shape Biden's agenda even before he’s sworn in.

Why it matters: The left wing of the party often draws attention for its protests, petitions and tweets, but this deliberate move reflects a determination to move beyond some fights they won't win to engage with Biden strategically, and over the long term.