Illustration: Rebecca Zisser/Axios

Nascent tech that pulls CO2 from the atmosphere could "significantly" reduce the costs of fighting climate change, but achieving scale is hardly a sure thing and massive deployment would consume lots of energy, a new peer-reviewed study warns.

Why it matters: The paper in Nature Communications arrives amid increasing attention to direct air capture (DAC) and other negative emissions technologies. They're important because it looks pretty unlikely that nations will cut emissions enough to meet the goals of the Paris climate deal.

  • The firm Carbon Engineering — whose backers include Bill Gates and oil giants Chevron and Occidental — recently announced plans for a big DAC plant in Texas.

What they found: According to the study, widespread deployment down the road would create a longer cushion to achieve steep emissions cuts.

  • In one scenario they modeled for holding global temperature rise to 1.5°C, it pushes the horizon for achieving "net-zero" emissions back from 2050 to roughly 2070, which would be "compensated by larger negative emissions thereafter."

Threat level: If policymakers wrongly bet on large-scale deployment, it could lead to a global temperature "overshoot" of up to 0.8 °C. That's a lot, given that Paris aims to limit the total increase to 1.5°C–2°C above preindustrial levels.

  • And large-scale deployment (think tens of thousands of big machines under one tech scenario), if even proven feasible would need to be really large, and that's not without consequences.
  • In theory, a huge buildout would consume as much as a fourth (!) of global energy demand to power and heat the systems by 2100, the paper notes.

The bottom line: The paper warns that DAC should not be viewed as a crutch, but rather as complementary to emissions-cutting strategies.

  • The authors recommend that policymakers speed up development and deployment, but "without easing near-term mitigation efforts" due to risks of the tech underperforming or failing.

Go deeper, via Carbon Brief: Direct CO2 capture machines could use ‘a quarter of global energy’ in 2100

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Amy Coney Barrett's immediate impact

Illustration: Eniola Odetunde/Axios

In her first week on the job, Amy Coney Barrett may be deciding which votes to count in the presidential election. By her third week, she’ll be deciding the fate of the Affordable Care Act.

Where it stands: The Senate votes on Barrett’s nomination tomorrow. If she’s confirmed, Chief Justice John Roberts is expected to swear her in at the Supreme Court within hours, an administration official tells Axios.

Texas Democrats beg Biden to spend now

Photo: Ron Jenkins/Getty Images

The Biden campaign is rebuffing persistent pleas from Texas Democrats to spend at least $10 million in the Lone Star state, several people familiar with the talks tell Axios.

Why it matters: If Texas — which has 38 electoral votes and is steadily getting more blue, but hasn't backed a Democrat for president since 1976 — flipped to the Biden column, it would be game over. But the RealClearPolitics polling average stubbornly hovers at +2.6 for Trump — and Team Biden appears more focused on closer targets.

Election night in Trumpworld

Photo illustration: Aïda Amer/Axios. Photo: Chris Carlson-Pool/Getty Images

A luxe election-night watch party at the Trump International Hotel on Pennsylvania Avenue is being planned for President Trump's donors, friends and advisers — but Trump's hand in it is minimal because he's "very superstitious" — people familiar with the plans tell Axios.

The big picture: This "mecca for all things MAGA," as one adviser described it, is one of three hubs where they say Trumpworld will watch returns. The others are the war room at campaign HQ in Rosslyn, Virginia, and the White House residence, where Trump and the first lady will gather close family and advisers before heading to the hotel later that night, the sources said.