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!

1) It's hard to define: Sophisticated audience measurement companies, like ComScore and SimilarWeb, are agnostic in their definition of what is considered fake news.

2) Which makes it hard to measure: SimilarWeb spokesman Ariel Rosenstein says the site can't always draw accurate conclusions about a website's overall reach based off inconsistent traffic patterns from sites frequently changing domains and subdomains.

3) It's still easy to monetize. Fake news sites can buy advertising through self-serving platforms once they receive enough impressions. Third-party ad-servers, like Google's AdSense, have implemented policies against fake news advertisers, but they have to be wary of over-characterizing which sites are considered real or fake.

4) Because regulators aren't acting: The FTC has the power to penalize sites that mislead consumers or affect consumer behavior. But the Commission rarely enforces the Act on accounts of libel that don't affect consumer behavior.

5) And it doesn't need Facebook or Google to survive: As Digiday notes, ad networks that distribute content to publishers at a low cost are also struggling to keep fake news sites off their distribution channels.

Go deeper

Miriam Kramer, author of Space
16 mins ago - Science

NASA's Mars helicopter is a test for the future of space exploration

Ingenuity (left) with Perseverance on Mars. Photo: NASA/JPL-Caltech/MSSS

NASA is set to fly the first test flight of its tiny Ingenuity helicopter on Mars Sunday, marking the advent of drones for space exploration.

Why it matters: If successful, this flight will be the first time a human-built aircraft has flown on a world other than Earth, opening the door to new means of exploring planets far from our own.

Bryan Walsh, author of Future
1 hour ago - Politics & Policy

The global future is looking dark and stormy

Illustration: Rae Cook/Axios

A new 20-year-forecast for the world: increasingly fragmented and turbulent.

The big picture: A major report put out this week by the National Intelligence Council reflects a present rocked by the COVID-19 pandemic. How the next two decades will unfold depends largely on whether new technologies will ultimately unite us — or continue to divide us.

11 hours ago - Politics & Policy

Rep. Gaetz declares he's "not going anywhere" amid sex trafficking probe

Rep. Matt Gaetz. Photo: Eva Marie Uzcategui/Bloomberg via Getty Images

Rep. Matt Gaetz (R-Fla.) doubled down Friday night, saying he's not "going anywhere," and vowing, "I have not yet begun to fight," amid a federal investigation into sex trafficking allegations.

What he's saying: “I’m built for the battle, and I’m not going anywhere,” Gaetz, who denies the allegations, said during a Women for America First event at the Trump National Doral Miami resort.