Zero Hour founder Jamie Margolin, L.A. Mayor Eric Garcetti and Paris Mayor Anne Hidalgo attend a press conference in Copenhagen in conjunction with the C40 Mayors Summit on Oct. 9. Photo: Liselotte Sabroe/Ritzau Scanpix/AFP via Getty Images

Mayors from 94 cities committed to cutting emissions from the sectors that most contribute to climate change (transportation, buildings, industry and waste) to keep global temperatures below the 1.5-degree Celsius goal of the Paris Agreement.

The big picture: The Global New Green Deal was announced today at the C40 Mayors Summit in Copenhagen. Despite the U.S. government pulling out of the Paris Climate Agreement, cities have committed to meeting greenhouse gas reduction goals.

"As mayors, our primary responsibility is to protect the lives and livelihoods of our citizens. Climate change now represents the greatest threat to their security, public health and prosperity," said Frank Jensen, lord mayor of Copenhagen, in a press conference.

  • He added that Copenhagen wants to be the first carbon-neutral capital city by 2025, and carbon emissions are down 40% since 2005.

What's next: Cutting global emissions in half by 2030 is necessary to void the worst impacts of the climate crisis, experts say. That means setting strict building codes, replacing fossil fuel energy sources with clean alternatives and dramatically reducing waste.

  • Los Angeles Mayor Eric Garcetti said we are entering a "make-or-break decade."
  • "Far from being in conflict, working on the ecology and economy go hand in hand. These two things are inextricably linked. In fact, we can build a more sustainable city at the same time we protect workers and create new careers," Garcetti said.

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Coronavirus dashboard

Illustration: Sarah Grillo/Axios

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  2. U.S.: Total confirmed cases as of 7 p.m. ET: 4,989,976 — Total deaths: 162,304 — Total recoveries: 1,643,118 — Total tests: 61,080,587Map.
  3. Politics: Trump signs 4 executive actions on coronavirus aid.
  4. Public health: Fauci says chances are "not great" that COVID-19 vaccine will be 98% effective — 1 in 3 Americans would decline COVID-19 vaccine.
  5. Science: Indoor air is the next coronavirus frontline.
  6. Schools: How back-to-school is playing out in the South as coronavirus rages on — Princeton, Johns Hopkins, Howard to hold fall classes online.

Trump signs 4 executive actions on coronavirus aid

President Trump speaking during a press conference on Aug. 8. Photo: Jim Watson/AFP via Getty Images

President Trump on Saturday signed four executive actions to provide relief from economic damage sustained during the coronavirus pandemic after talks between the White House and Democratic leadership collapsed Friday afternoon.

Why it matters: Because the Constitution gives Congress the power to appropriate federal spending, Trump has limited authority to act unilaterally — and risks a legal challenge if congressional Democrats believe he has overstepped.

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What's next for Lebanon after the Beirut explosion

Photo: Houssam Shbaro/Anadolu Agency via Getty Images

Beirut residents are still clearing rubble from streets that appear war-torn, days after a blast that shocked the country and horrified the world.

Why it matters: The explosion is likely to accelerate a painful cycle Lebanon was already living through — discontent, economic distress, and emigration.