Mr. Wu is a law professor who studies how companies manipulate customers, extract wealth and deepen inequality. For two decades now, social media companies have been virtually untouchable, profitably ...

Closing arguments began Thursday in a landmark trial that put online behavior under a microscope. In many ways, it has already been decided. Credit...Hokyoung Kim Supported by By David Streitfeld ...

Over the past few months, several countries have announced plans to restrict social media access for children and teens. Australia became the first to implement such measures at the end of last year, ...