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David J. Phillip / AP

Penn State scientist Michael Mann posted a short primer on Facebook that describes the connection between the devastating storm and global warming. While climate change didn't "cause" the storm, it's worsening the impact in several ways, he says.

  • Rising waters: Sea level rise attributable to climate change (some is due to coastal subsidence due to human disturbance, e.g. oil drilling) is more than half a foot over the past few decades. "That means that the storm surge was a half foot higher than it would have been just decades ago, meaning far more flooding and destruction."
  • Warmer waters: The rise in sea surface temperatures in the region by about a half-degree celsius in recent decades has led to a roughly 3% rise in atmospheric moisture content. "That large amount of moisture meant the potential for much greater rainfalls and greater flooding," Mann writes.

Go deeper

Dave Lawler, author of World
2 hours ago - World

How Biden might tackle the Iran deal

Photo illustration: Aïda Amer/Axios. Photo: Drew Angerer/Getty Images

Four more years of President Trump would almost certainly kill the Iran nuclear deal — but the election of Joe Biden wouldn’t necessarily save it.

The big picture: Rescuing the 2015 Joint Comprehensive Plan of Action (JCPOA) is near the top of Biden's foreign policy priority list. He says he'd re-enter the deal once Iran returns to compliance, and use it as the basis on which to negotiate a broader and longer-lasting deal with Iran.

Kamala Harris, the new left's insider

Photo illustration: Eniola Odetunde/Axios. Photo: Joe Buglewicz/Getty Images     

Progressive leaders see Sen. Kamala Harris, if she's elected vice president, as their conduit to a post-Biden Democratic Party where the power will be in younger, more diverse and more liberal hands.

  • Why it matters: The party's rising left sees Harris as the best hope for penetrating Joe Biden's older, largely white inner circle.

If Biden wins, Harris will become the first woman, first Black American and first Indian American to serve as a U.S. vice president — and would instantly be seen as the first in line for the presidency should Biden decide against seeking a second term.

Updated 10 hours ago - Politics & Policy

Coronavirus dashboard

Illustration: Sarah Grillo/Axios

  1. Health: Large coronavirus outbreaks leading to high death rates — Coronavirus cases are at an all-time high ahead of Election Day — U.S. tops 88,000 COVID-19 cases, setting new single-day record.
  2. Politics: States beg for Warp Speed billions.
  3. World: Taiwan reaches a record 200 days with no local coronavirus cases.
  4. 🎧Podcast: The vaccine race turns toward nationalism.