Juries in two big cases have affirmed what research is finding: The design of social media platforms is particularly compelling and hard to resist for kids. There are growing calls to change it.

Younger Americans are more likely to use social media at least sometimes for health information than their older peers.

President Donald Trump polarized social media with a Truth Social post that an entire "civilization will die tonight" while threatening a devastating U.S. attack against Iran.

Could the social media ruling follow the path of the landmark cases against big tobacco a few decades ago? — Alicia P.Q. Wittmeyer Cecilia, is this Big Tech’s big tobacco moment, as some of our colleagues put it?

The House passed legislation on a 129-25 vote, largely along party lines, prohibiting social media use for children under 14 and requiring that social media platforms obtain parental consent for users aged 14 and 15.

"In his first term, I think people would have been a lot more worked up about whether or not a post like this should or should not stay up," former Facebook official Katie Harbath said.

In a profanity-laden post on Truth Social, President Trump lashed out at Iran and injected new volatility into the conflict, hours after U.S. forces carried out a high-risk rescue mission.

"I think the argument for a ban is an admission of failure that we cannot regulate companies, so we can only restrict children," one expert told CNBC.