Social media companies face legal scrutiny over deteriorating mental health among teens

A national survey by the CDC sounded a new alarm about teens in crisis. It shows nearly 30% of teenage girls said they considered dying by suicide, and three out of five girls said they felt persistently sad or hopeless. This comes as there’s growing concern about the impact of social media. Christopher Booker reports for our series, ​​"Early Warnings: America’s Youth Mental Health Crisis."