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Rescuers work to free people trapped upstairs during torrential rain that caused flash floods along Main Street in Ellicott City, MD.

Flash flooding from a massive rainstorm rushed through Main Street on Sunday in Ellicott City, Md., which was severely ravaged by flood waters just two years ago.

Why it matters: Sunday's and 2016 flooding likely rank as greater than 1-in-1,000 year rainstorms, which means than in any given year there's just a 0.1 percent chance of them occurring, Axios science editor Andrew Freedman explains. By adding more moisture to the air available for storms, climate change is leading to a well-documented uptick in heavy rain events, particularly in the Northeast. Human development patterns are also elevating flood risk in many areas.

Between the lines: Although scientists have not yet examined this particular, localized event, climate change has led to a well-documented uptick in heavy rain events, particularly in the Northeast.

Videos from the scene by The Baltimore Sun's Libby Solomon:

Go deeper: Police are still searching for Eddison Hermond, 39, the Baltimore Sun reports.

Go deeper

Kendall Baker, author of Sports
54 mins ago - Sports

2021 Tokyo Olympics hang in the balance

Illustration: Aïda Amer/Axios

10 months ago, the Tokyo Olympics were postponed. Now, less than six months ahead of their new start date, the dreaded word is being murmured: "canceled."

Driving the news: The Japanese government has privately concluded that the Games will have to be called off, The Times reports (subscription), citing an unnamed senior government source.

Biden's centrist words, liberal actions

Illustration: Sarah Grillo/Axios

President Biden talks like a soothing centrist. He promises to govern like a soothing centrist. But early moves show that he is keeping his promise to advance a liberal agenda.

Why it matters: Never before has a president done more by executive fiat in such a short period of time than Biden. And those specific actions, coupled with a push for a more progressive slate of regulators and advisers, look more like the Biden of the Democratic primary than the unity-and-restraint Biden of the general election.

2 hours ago - Technology

Review of Trump ban marks major turning point for Facebook

Photo Illustration: Aïda Amer/Axios. Photo: Saul Loeb/AFP via Getty Images

Facebook's decision to ask its new independent Oversight Board to review the company's indefinite suspension of former President Trump is likely to set a critical precedent for how the social media giant handles political speech from world leaders.

What they're saying: "I very much hope and can expect … that they will uphold our decision," Facebook's VP of global affairs Nick Clegg tells Axios.