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Photo: Sven Hoppe/dpa via Getty Images

Mark Zuckerberg, speaking at a fireside chat at the Munich Security Conference, said that since 2016, Facebook has "played a role in helping to defend the integrity of" more than 200 elections around the world.

Why it matters: On top of growing revenue and the number of users on Facebook, Zuckerberg also has to ensure that the platform is not blamed for negatively influencing elections and does not buckle on freedom of speech.

What he's saying: Zuckerberg said the successful techniques have included "developing AI systems that can identify fake accounts and networks of accounts."

  • "In the last couple of weeks, we took down one that was coming out of Russia [targeting] Ukraine, and one coming out of Iran that was targeting the U.S."
  • Zuckerberg said the majority of the more than 1 million fake accounts Facebook takes down each day aren't connected to state actors interfering with elections. They're spammers.
  • "One of the things that we are tracking that we have been quite worried about is that increasingly, election interference ... is ... also domestic. You have ... local actors also trying to employ some of the same tactics. ... We have also seen these actors get more sophisticated at trying to hide their tracks."

Zuckerberg said a big Facebook transformation in the last few years has been "from being more reactive about addressing content-type issues to being more proactive":

  • "I started the company in my dorm room. Back then, we could not have 35,000 people doing content and security review. The AI. 16 years ago, did not exist ... to identify this type of harmful stuff."

"Hate speech is a particularly challenging one," he continued. "We have to be able to train AI systems to detect ... nuances. Is someone posting a video of a racist attack because they are condemning it ... or are they encouraging other people."

  • "Multiply ... that subtlety, linguistically, by 150 languages around the world where we operate."

Go deeper: Facebook executive argues digital ads got Trump elected

Go deeper

1 hour ago - Health

Pfizer coronavirus vaccine safe, effective in children, company says

Photo by Mario Tama/Getty Images

Pfizer and BioNTech's coronavirus vaccine is safe and effective in children ages 5 to 11, albeit at a lower dose than adults receive, the companies said in a press release announcing results from a pediatric trial.

Why it matters: The trial results are a much-needed source of hope for families with elementary school-aged children, who currently aren't eligible for a vaccine.

The pandemic made our workweeks longer

Illustration: Annelise Capossela/Axios

The average American's workweek has gotten 10% longer during the pandemic, according to a new Microsoft study published in Nature Human Behaviour.

Why it matters: These longer hours are a key part of the pandemic-induced crisis of burnout at U.S. firms — and workers are quitting in droves.

Mike Allen, author of AM
2 hours ago - Economy & Business

Airbnb CEO Brian Chesky to herald "travel revolution"

Expand chart
Data: TSA. Chart: Jared Whalen/Axios

Airbnb CEO Brian Chesky will argue this week that the world is undergoing a "travel revolution," in which some parts of the industry stay shrunk but the sector ultimately comes back "bigger than ever."

Why it matters: Chesky, who faced the abyss when the world shut down last year, foresees a significant shift in how people move around, with more intentional gatherings of family, friends and colleagues — even if routine business travel is never what it once was.