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!

Illustration: Annelise Capossela/Axios

Scientists think they may have found an indicator of life in Venus’ clouds — a discovery that, if confirmed, will cause them to re-examine everything they thought they knew about how life evolves.

The big picture: If life does exist within a small niche of habitability in Venus' temperate layer of clouds, it might mean that life could be even more ubiquitous in the universe than previously expected. The discovery is already fueling calls from scientists who want a mission sent to the nearby world.

  • "If we have Venus also creating life, amidst some completely different scenarios from what we have on Earth, it would be really quite silly to think there's some unique thing about our solar system," Clara Sousa-Silva, an author of the new Venus study and researcher at MIT, told Axios.

Catch up quick: On Monday, scientists announced the discovery of phosphine — a possible sign of life — in the clouds of Venus' upper atmosphere.

  • The gas isn't a sure-fire sign that microbes are floating around in the planet's clouds, but the researchers behind the study haven't yet been able to find another explanation for why the phosphine exists.
  • Future observations will focus on confirming the phosphine detection and scientists are advocating for a Venus probe that might be able to sniff out the gas — and possibly life — in the planet's atmosphere.

The big question: What kind of life could exist within Venus' clouds?

  • Scientists think Venus once was somewhat like Earth, long-lived bodies of water on its surface. But hundreds of millions of years ago, a runaway greenhouse effect took over, leaving the planet shrouded in dense clouds and host to an inhospitable surface.
  • On Venus, microbes or even other creatures living in the clouds could be the last holdouts after a violent reordering of their world's climate — or it could be life that evolved independently in the clouds.
"If there had been life there when it was habitable, maybe that life managed to adapt. Or maybe only the few life forms that could make it into the clouds, they watched a worldwide massacre of every other lifeform they knew, and this is them hanging on to the very end, and we're witnessing this kind of final chapter of life on Venus."
— Clara Sousa-Silva

Yes, but: Even if life is confirmed on Venus, it will still take time and a lot of analysis to figure out its origins.

  • Scientists have long wondered if life could have been seeded throughout the solar system either though meteorites or some other mechanism that spreads material around the solar system.
  • If life came to be on Venus entirely independently of life on Earth, however, that would tell researchers something important about how exactly life evolves, potentially providing answers to a number of questions about the nearby planet's history and evolution.
  • "That's why this has the potential to open a lot of doors that we haven't really appreciated before," planetary geologist Paul Byrne, who wasn't involved in the new study, told Axios.

Go deeper

Miriam Kramer, author of Space
Jul 7, 2020 - Science

The race to find Planet X heats up

Illustration: Eniola Odetunde/Axios

Teams of scientists are vying to be the first to spot a large, hypothetical planet that might be lurking in the outer reaches of our solar system.

Why it matters: Astronomers have found thousands of planets orbiting other stars, but the hunt for this possible planet orbiting our own Sun — called Planet X or Planet 9 by some — is showing just how little we know about our solar system.

20 mins ago - World

Biden huddles with European allies on Ukraine ahead of Putin call

Putin in the Kremlin. Photo: Grigory Sysoyev/Sputnik via Getty

President Biden will seek to convince Russia's Vladimir Putin in a phone call Tuesday that the price of invading Ukraine would be steeper than anything he's faced in the past.

Driving the news: Biden held a call on Ukraine this evening with the leaders of France, Germany, Italy and the U.K., while Secretary of State Tony Blinken called Ukrainian President Volodymyr Zelensky to offer America's "unwavering support."

Justice Department closes Emmett Till murder probe

A faded photograph is attached to the headstone that marks the gravesite of Emmett Till in Burr Oak Cemetery in Chicago. Photo: Scott Olson via Getty Images

The family of Emmett Till announced Monday that the Department of Justice has formally closed its second investigation into the 1955 murder of Emmett Till.

Why it matters: The DOJ reopened the probe in 2018 after the white woman at the center of the case reportedly recanted her allegation that Till, a Black 14-year-old, sexually harassed her prior to his murder.