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!

Stay on top of the latest market trends

Subscribe to Axios Markets for the latest market trends and economic insights. Sign up for free.

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!

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

The town of Isafjordur in Iceland, where the climate is more temperate because of the influence of warm Gulf Stream current. Photo: Masci Giuseppe/AGF/Universal Images Group via Getty Images

A new study has worrying conclusions about changes to a vital aspect of the global climate system.

Why it matters: The apparent weakening of the Atlantic Meridional Overturning Circulation (AMOC) — largely because of melting ice — is a reminder that climate change could bring about nasty surprises in the future.

Driving the news: In a study published in Nature Geoscience on Thursday, researchers reported the AMOC — a system of ocean currents that includes the Florida Current and the Gulf Stream — is in its "weakest state in over a millennium."

  • The AMOC is the oceans' thermohaline circulation, and it plays an important role in managing the global climate, including keeping temperatures in Europe warmer than they would otherwise be for its latitude.

The big picture: The AMOC has been called the "Achilles' heel" of the climate, causing drastic changes when it has shifted on and off during the Earth's history.

  • It got a moment of public fame in the 2004 climate disaster film "The Day After Tomorrow," where it shut off and caused intense storms and weather to wreck major cities around the world.

Yes, but: Nothing remotely near that drastic is expected even if the current were to weaken far more, and researchers still don't have a direct grasp on the health of the AMOC, which is why they were forced to use proxy data in the study.

The bottom line: The biggest reason to worry about climate change — and act on it — isn't the most likely but survivable bad outcomes, but the less likely ones that could be truly existential.

Go deeper

35 mins ago - World

In photos: The funeral of Prince Philip puts military and royal tradition on display

Prince Philip’s coffin, covered with His Royal Highness’s Personal Standard is carried to the purpose built Land Rover during the Duke of Edinburghe's funeral. Photo: Adrian Dennis/WPA Pool/Getty Images

Prince Philip, the Duke of Edinburgh who died April 9 at age 99, will be laid to rest on Saturday following a funeral service at St. George’s Chapel on the grounds of Windsor Castle.

The big picture: "His send-off will be highly unusual — in part because coronavirus restrictions meant the ceremony had to be scaled back, but also because it comes just after a very public airing of a family rift," The New York Times writes.

Army officer lawsuit shines light on police treatment of Afro-Latinos

A screenshot from bodycam footage showing U.S. Army Lt. Caron Nazario during the traffic stop in December, when he was pepper-sprayed.

Caron Nazario, a Black and Latino lieutenant in the U.S. Army, was threatened and pepper-sprayed during a traffic stop that is now under investigation by the Virginia attorney general's office for being “dangerous, unnecessary, unacceptable and avoidable.”

Why it matters: Nazario’s resulting lawsuit against the Windsor, Virginia, police department has brought attention to police treatment of Afro-Latinos, and the lack of data about it despite a growing reckoning over abuses from law enforcement.

3 hours ago - Health

Global COVID-19 death toll surpasses 3 million

Illustration: Sarah Grillo/Axios

The global toll of confirmed deaths from COVID-19 surpassed 3 million on Saturday, according to data from Johns Hopkins University.

By the numbers: The U.S. has seen more deaths (566,238) than any other country, followed by Brazil (368,749) and Mexico (211,693).