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Nickel refinery in Siberian town of Norilsk. Photo: Oleg Nikishin/Getty Images

Temperatures in the small Siberian town of Verkhoyansk — normally one of the coldest places on the planet — reached 100.4°F on Saturday, likely the hottest temperature ever recorded in Siberia and north of the Arctic Circle, CBS News reports.

Driving the news: Multiple northern towns around the world have recorded scorching temperatures in recent days, including the city of Caribou, Maine, which on Friday tied its all-time record of 96°F.

  • Temperatures in Caribou were also well above 90°F on Saturday, almost matching temperatures in Miami, Florida, which has only reached 100°F one time since Miami began keeping temperature records, according to CBS.
  • The Arctic Circle begins at a latitude of 66.5°N. Verkhoyansk sits at 67.5°N.

How it works: The record temperatures are likely the combination of natural weather patterns and human-caused climate change resulting from the emission of greenhouse gases, like carbon dioxide.

  • The greenhouse gases released from the burning of fossil fuels become trapped in the atmosphere and hold onto heat from the Sun, which gradually warms the Earth's atmosphere and surface.

The big picture: Some cities in western Siberia recorded temperatures 18°F above normal throughout May. As a whole, western Siberia averaged 10°F above normal that month.

  • The unprecedented summer in Siberia has ignited numerous fires in the region.
  • Last year, the northern Swedish town of Markusvinsa hit 94.6°F. The abnormal heat caused large Arctic fires, making 2019 the Arctic's worst fire season on record.
  • Overall, the Arctic is warming at more than two times the average rate of the globe.

Go deeper: The game theory of using geoengineering to fight climate change

Go deeper

Newsom to Trump at wildfire event: "Climate change is real"

California Gov. Gavin Newsom (D) pointedly told President Trump on Monday afternoon that climate change is "exacerbating" the wildfires currently ravaging the West Coast.

Why it matters: Trump has repeatedly insisted that the fires were "about forest management," while dismissing climate change. Newsom acknowledged to Trump that "we have not done justice on our forest management," but emphasized that climate change was making everything much worse. A number of politicians have criticized Trump and his administration for not properly addressing climate change.

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Beto not even best Dem against Abbott

Beto O'Rourke speaks at a rally at the Texas State Capitol in June. Photo: Sergio Flores/Getty Images

Actor Matthew McConaughey’s nine-point lead in a theoretical matchup against Greg Abbott shows just how vulnerable the hard-right Texas governor could be in a general election.

Why it matters: Abbott has won conservative accolades for his abortion, mask and vaccine bans. Axios reported Sunday that former Rep. Beto O’Rourke is preparing to announce a gubernatorial challenge — but a recent poll shows he’s not even the most popular Democrat in the state.

2 hours ago - Politics & Policy

Delayed maps upend midterm campaigns

Illustration: Shoshana Gordon/Axios

Midterm candidates are panicking about how the congressional maps will ultimately be drawn, with several strategists telling Axios campaigns are in limbo.

Why it matters: Candidates are unsure if the district they're targeting will remain intact or be reshaped by the process. The uncertainty is especially vexing to Democrats, who are vying to maintain their narrow margin in the House.