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From KUED in San Francisco, I'm Nina Kim. Coming up on forum, top Facebook officials have known for years that the social platform can have harmful impacts on users,

but they've failed to do much about them.

That's according to a new Wall Street Journal series that reviewed internal documents,

suggesting the company disregarded reports from employees that it damages teens' mental health

or speeds up the spread of misinformation.

Now Facebook is pushing back saying that journal investigation deliberately mischaracterized the

company's actions.

We'll talk to the reporters behind the series and take your questions after this news. This is Forum. I'm Mina Kim. Nearly a third of teen girls, say Instagram, Facebook's photo and image sharing app, makes them feel worse about their bodies. and among teens who've had suicidal thoughts,

13% of British users and 6% of US users trace this to Instagram.

These are issues Facebook has known about because the data come from the company's own research.

But according to a Wall Street Journal investigation, time and again, Facebook's leaders have done little to address these and other harms brought to their attention by their own employees.

Joining me now are Wall Street Journal tech reporters Jeff Horowitz.

...