Photo: Rapeepong Puttakumwong/Getty Images

A New York University study has identified a pattern of lung cancer in mice exposed to the same amount of e-cigarette vapor as someone who's been using e-cigs for approximately three to six years.

The big picture: As vaping deaths and illnesses rise, the medical community and health regulators are increasingly concerned about the unknown effects of e-cigarette use. While e-cigs were originally meant to help cigarette users ween off smoking as a whole, vaping has dramatically increased in popularity in recent years, especially among young people.

By the numbers: The study exposed 40 mice to vapes with nicotine for 54 weeks. Out of that population:

  • 22.5% developed lung cancer
  • 57.5% developed pre-cancerous lesions in their bladders
  • Meanwhile, 20 separate mice who were exposed to vapes without nicotine were cancer free

What they're saying:

"E-cigarette vaping can cause lung cancer and pre-cancer changes in bladder in mice. The carcinogenic mechanism is via production of nitrosamines, the proven human carcinogens. So, the probability that e-cigarette vapor is a human carcinogen is high."
— Moon-Shong Tang, the study's lead professor, told Axios.

Go deeper: GOP allies warn vaping ban will sink Trump in 2020

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Updated 50 mins ago - Politics & Policy

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Illustration: Aïda Amer/Axios

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  2. Economy: Why the stimulus delay isn't a crisis (yet).
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Photo: Stefani Reynolds/Getty Images

Senate Democrats on Wednesday blocked a vote on Republicans' $500 billion targeted COVID-19 relief bill, a far less comprehensive package than the $1.8 trillion+ deal currently being negotiated between the Trump administration and House Democrats.

Why it matters: There's little appetite in the Senate for a stimulus bill with a price tag as large as what President Trump and House Speaker Nancy Pelosi have been calling for. Senate Majority Leader Mitch McConnell's (R-Ky.) "skinny" proposal was mostly seen as a political maneuver, as it had little chance of making it out of the Senate.

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Illustration: Aïda Amer/Axios

The recent firestorm over the New York Post’s publication of stories relying on data from a hard drive allegedly belonging to Hunter Biden shows the increasingly hazy line between domestic political “dirty tricks” and a foreign-sponsored disinformation operation.

Why it matters: This haziness could give determined actors cover to conduct influence operations aimed at undermining U.S. democracy through channels that just look like old-fashioned hard-nosed politics.