A decade-old social media trend was broadly revived on TikTok this week, as users are challenging one another to dump an ice bucket on their head for mental health awareness, mirroring the original ...

TikTok is one of the most popular video-sharing and social media apps in the world. But its Chinese ownership has raised concerns in the U.S. and elsewhere.

TikTok has long been seen as a breeding ground for dumb stunts, but some challenges are truly hazardous to one’s health. A recent survey found that the blackout challenge is the deadliest of all — ...