Seeking social media stardom for their underage daughters, mothers post images of them on Instagram. The accounts draw men sexually attracted to children, and they sometimes pay to see more.

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The C.E.O. and his team drove Meta’s efforts to capture young users and misled the public about the risks, lawsuits by state attorneys general say.

© Illustration by Pablo Delcan; Photograph by Kenny Holston/The New York Times

The social media app says new privacy settings and features will create more age-appropriate experiences for youth under 18.

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The app, which is popular with teenagers, introduced new settings and features aimed at addressing inappropriate online contact and content, and improving sleep for users under 18.

© Anthony Gerace

The Facebook and Instagram owner said it would bar Russian media outlets including RT, which the U.S. has accused of acting as an intelligence arm.

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Videos by influencers documenting their trips have been widely promoted on Chinese media — if they tell a certain story.