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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.

Go deeper

Biden to tap telecom trio for NTIA, FCC posts

Jessica Rosenworcel. Photo: Bill Clark/CQ Roll Call

President Joe Biden on Tuesday is expected to name Alan Davidson as head of the telecom arm of the Commerce Department, Jessica Rosenworcel as chairwoman of the Federal Communications Commission and Gigi Sohn as a commissioner at the FCC, according to a person familiar with the process.

Why it matters: Internet availability and affordability has been a key policy priority for the White House, but the administration lagged in tapping people for the agency posts that oversee the issues.

2 hours ago - Technology

Facebook seeks fountain of youth

Data: Piper Sandler Taking Stock With Teens Study; Chart: Axios Visuals

Facebook CEO Mark Zuckerberg on Monday said that the company is pivoting its strategy to focus on young adults, following reports that teens have fled its apps.

Why it matters: A series of stories based on leaked whistleblower documents suggest the company sees the aging of its user base as an existential threat to its business.

Too big to cover alone: Newsrooms team up

Illustration: Annelise Capossela/Axios

News outlets are increasingly willing to work together on big, multifaceted stories — including this week's reporting on leaked documents from a Facebook whistleblower.

Why it matters: Collaborative efforts help bring more resources to bear on complex stories, some of which require a global reporting effort. But they require high degrees of coordination, and competition can sometimes get in the way.