Protestors at last year's March for Science in Washington. Photo: Astrid Riecken for The Washington Post via Getty Images

A just-released paper from the Niskanen Center charts how Capitol Hill's partisan divide on the environment grew so stark in recent decades while offering a few reasons why GOP lawmakers' posture on climate could shift in the future.

Why it matters: The paper delves into demographic, economic and political forces that could eventually lead Republicans to moderate their positions.

  • Younger voters show more support for regulation than their elders, noting a GOP "generation gap" on climate. To be sure, though, a recent Pew survey showed that most millennial Republicans don't agree with the scientific mainstream on human-caused warming.
  • The fossil fuel industry represents a declining share of U.S. employment, and political giving to Republicans from renewable energy interests is growing.

One useful metric: The paper, by University of Maryland political scientist David Karol, uses League of Conservation Voters' annual rankings of lawmakers as a proxy for polarization.

Quoted: "Changes on the environment might actually prove easier for Republicans than modifying stands on issues like immigration, which connects directly to identity politics," he writes.

Be smart: Predictions of a shift in GOP lawmakers' stances on climate have been around for years, yet actual changes in posture have been very rare. Karol's paper isn't Pollyannish, but it offers a lucid look at how the landscape could eventually shift.

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Coronavirus dashboard

Illustration: Aïda Amer/Axios

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Trump says he intends to give RNC speech on White House lawn

President Trump speaking to reporters on South Lawn in July. Photo: Jabin Botsford/The Washington Post via Getty Images

President Trump told the New York Post on Thursday that he plans to deliver his Republican National Convention speech from the White House lawn, despite bipartisan criticism of the optics and legality of the location.

Why it matters: Previous presidents avoided blurring staged campaign-style events — like party conventions — with official business of governing on the White House premises, per Politico.

Fauci's guidance on pre-vaccine coronavirus treatments

Illustration: Aïda Amer/Axios

Antibody drugs and various medicine cocktails against the coronavirus are progressing and may provide some relief before vaccines.

The big picture: Everyone wants to know how and when they can return to "normal" life, as vaccines are not expected to be ready for most Americans for at least a year. Two therapies are known to be helpful, and more could be announced by late September, NIAID Director Anthony Fauci tells Axios.