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We used to define fire by seasons: they varied from place to place, but there was a period of time that fires were not reliably seen before, and a date they probably wouldn’t be seen after. That is no longer the case, as the destructive fires burning this December in Southern California make clear.

Expand chart
Data: CAL FIRE. Data was compiled with help from Jill Hubley. Get the data. Chart: Lazaro Gamio / Axios

The above chart shows all fires that burned over 300 acres each year from 2000 to 2017 in California, including this months’ blazes.

The future, right now: We tend to talk about extreme weather and fire events as a "glimpse into our future under climate change." But these previously-rare events are increasingly common. "If ‘unexpected’ becomes the norm, because we only talk about extreme weather, how do we change the conversation?" Jeff Rosenfeld, the editor in chief of the bulletin of the American Meteorlogical Society, asked at the American Geophysical Union's annual fall meeting on Wednesday.

The 2017 fire season was one of the worst ever seen across North America:

It's only getting worse: Wildfire seasons are expected to last longer and burn hotter as climate change makes many areas warmer and dryer. "Warmer spring causes earlier snowmelt, [and] warmer summer temperatures can dry out the wood," says Jeffrey Pierce of Colorado State University.

Go deeper: Inside Climate News looks at our future with fire in a warming world.

Go deeper

Miriam Kramer, author of Space
Updated 1 hour ago - Science

NASA's delays Mars helicopter test flight

Ingenuity (left) with Perseverance on Mars. Photo: NASA/JPL-Caltech/MSSS

NASA announced Saturday it rescheduled its Ingenuity Mars helicopter's first experimental flight, originally planned for Sunday.

The latest: "During a high-speed spin test of the rotors on Friday, the command sequence controlling the test ended early due to a 'watchdog' timer expiration," NASA said in a statement. "This occurred as it was trying to transition the flight computer from ‘Pre-Flight’ to ‘Flight’ mode."

2 hours ago - Politics & Policy

Scoop: Ohio Senate candidate Josh Mandel escorted out of RNC retreat

Ohio Republican Senate candidate Josh Mandel. Photo: Chris Maddaloni / Getty Images

During this weekend’s highly anticipated donor retreat hosted by the Republican National Committee in Palm Beach, Ohio Senate candidate Josh Mandel was escorted off the premises while his primary opponent, Jane Timken, was allowed to stay, two sources with direct knowledge of the situation tell Axios.

What we’re hearing: The invitation-only event is taking place at the Four Seasons Resort, and the RNC reserved the entire hotel. While Timken, former Ohio GOP chair, was invited to the event “because she is a major donor” — Mandel was not, so he was asked to leave, according to one of the sources.

Ben Geman, author of Generate
3 hours ago - Energy & Environment

Report: John Kerry plans to visit China ahead of Biden's climate summit

John Kerry. Photo: Zach Gibson / Stringer

John Kerry, President Biden's special climate envoy, is expected to travel to China next week for meetings with officials aimed at boosting collaboration, the Washington Post reported Saturday.

Why it matters: China is the world's largest carbon dioxide emitter and the U.S. is second-largest.