Sign up for our daily briefing

Make your busy days simpler with Axios AM/PM. Catch up on what's new and why it matters in just 5 minutes.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Catch up on the day's biggest business stories

Subscribe to Axios Closer for insights into the day’s business news and trends and why they matter

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Sign up for Axios Pro Rata

Dive into the world of dealmakers across VC, PE and M&A with Axios Pro Rata. Delivered daily to your inbox by Dan Primack and Kia Kokalitcheva.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Sports news worthy of your time

Binge on the stats and stories that drive the sports world with Axios Sports. Sign up for free.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Tech news worthy of your time

Get our smart take on technology from the Valley and D.C. with Axios Login. Sign up for free.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Get the inside stories

Get an insider's guide to the new White House with Axios Sneak Peek. Sign up for free.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Catch up on coronavirus stories and special reports, curated by Mike Allen everyday

Catch up on coronavirus stories and special reports, curated by Mike Allen everyday

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Denver news?

Get a daily digest of the most important stories affecting your hometown with Axios Denver

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Des Moines news?

Get a daily digest of the most important stories affecting your hometown with Axios Des Moines

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Twin Cities news?

Get a daily digest of the most important stories affecting your hometown with Axios Twin Cities

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Tampa Bay news?

Get a daily digest of the most important stories affecting your hometown with Axios Tampa Bay

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Charlotte news?

Get a daily digest of the most important stories affecting your hometown with Axios Charlotte

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Nashville news?

Get a daily digest of the most important stories affecting your hometown with the Axios Nashville newsletter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Columbus news?

Get a daily digest of the most important stories affecting your hometown with the Axios Columbus newsletter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Dallas news?

Get a daily digest of the most important stories affecting your hometown with the Axios Dallas newsletter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Austin news?

Get a daily digest of the most important stories affecting your hometown with the Axios Austin newsletter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Atlanta news?

Get a daily digest of the most important stories affecting your hometown with the Axios Atlanta newsletter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Philadelphia news?

Get a daily digest of the most important stories affecting your hometown with the Axios Philadelphia newsletter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Chicago news?

Get a daily digest of the most important stories affecting your hometown with the Axios Chicago newsletter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Sign up for Axios NW Arkansas

Stay up-to-date on the most important and interesting stories affecting NW Arkansas, authored by local reporters

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top DC news?

Get a daily digest of the most important stories affecting your hometown with the Axios DC newsletter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Smoke billows from stacks at a coal-fired power plant in Shanxi, China. Photo: Kevin Frayer/Getty Images

Atmospheric levels of the greenhouse gas carbon dioxide (CO2) reached the highest ever recorded in human history in 2018, the World Meteorological Organization (WMO) announced in a new report Monday.

Why it matters: If the trend continues, as predicted, the impact of climate change will become even more severe, the intergovernmental organization warns. "The last time the Earth experienced a comparable concentration of CO2 was 3-5 million years ago," WMO Secretary-General Petteri Taalas said in a statement accompanying the report.

  • "Carbon dioxide is the most important long-lived greenhouse gas, with a single molecule lasting in the air for hundreds to around 1,000 years," science journalist Andrew Freedman has noted for Axios. "The continued buildup of carbon dioxide due to human activities, such as burning fossil fuels for energy, is driving global temperatures up and instigating harmful impacts worldwide."

By the numbers: The WMO's Greenhouse Gas Bulletin reports that globally averaged concentrations of CO2 reached 407.8 parts per million last year. That means for every 1 million molecules of gas in the atmosphere, almost 408 were carbon dioxide.

  • It's an increase from 405.5 parts per million (ppm) in 2017. "The increase in CO2 from 2017 to 2018 was very close to that observed from 2016 to 2017 and just above the average over the last decade," the WMO notes.
  • Global levels of CO2 crossed the symbolic and significant 400 parts per million benchmark in 2015.

What they're saying: United Nations Environment Programme (UNEP) executive director Inger Andersen said in a statement the WMO data and preliminary findings in the 2019 UN Emissions Gap Report, released in September, "point us in a clear direction — in this critical period, the world must deliver concrete, stepped-up action on emissions."

"There is no sign of a slowdown, let alone a decline, in greenhouse gases concentration in the atmosphere despite all the commitments under the Paris Agreement on Climate Change. We need to translate the commitments into action and increase the level of ambition for the sake of the future welfare of the mankind."
— Statement by WMO Secretary-General Petteri Taalas

The big picture: This continuing long-term trend means that future generations can expect "rising temperatures, more extreme weather, water stress, sea level rise and disruption to marine and land ecosystems" unless drastic action is taken, the WMO says.

  • The WMO says global emissions are "not estimated to peak by 2030, let alone by 2020," if current climate policies and ambition levels of the Nationally Determined Contributions (NDCs) are maintained.
  • Separate findings in the UN Environment's Emissions Gap Report assessing the latest scientific studies on current and estimated future greenhouse gas emissions, was due to be released Tuesday, ahead of next month's UN Climate Change Conference in Madrid.

Read the WMO bulletin:

Go deeper:

Go deeper

Burnout, money, concern drive Harris turnover

Vice President Kamala Harris and another potential 2024 presidential candidate, Transportation Secretary Pete Buttigieg, appeared together Thursday in Charlotte, N.C. Photo: Logan Cyrus/AFP via Getty Images

Burnout, better opportunities and concern about being permanently branded a "Harris person" is driving some of the turnover in Vice President Kamala Harris's office, people familiar with the situation tell Axios.

Why it matters: Harris is not only a heartbeat from the presidency but, by virtue of her office, the presumed 2024 frontrunner if President Biden doesn't seek re-election. There's been an inordinate amount of disarray — and, now, turnover — throughout her tenure.

Updated 3 hours ago - Health

WHO: Delta health measures help fight Omicron

Photo: Mario Tama/Getty Images

Health measures taken to combat COVID-19 before the emergence of Omicron would also help against the new variant of concern, World Health Organization officials said Friday.

What they're saying: Takeshi Kasai, WHO regional director for the Western Pacific, said during a virtual briefing broadcast from Manila, Philippines, that border controls imposed by the U.S. and other nations can "buy time" to deal with the variant, but warned "every country and every community must prepare for new surges in cases."

4 hours ago - Health

Nevada to impose insurance surcharge on unvaccinated state workers

Nevada Gov. Steve Sisolak. Photo: Ethan Miller/Getty Images

Nevada's Public Employees' Benefit Program Board voted Thursday to charge workers enrolled in public employee health insurance plans a surcharge of up to $55 a month if they're not vaccinated against COVID-19, the Las Vegas Review-Journal reports.

Why it matters: Nevada is the first state to announce such a move, per AP.