>> facebook's davis down played the reaction saying there were benefits from teenage's health on instagram. saying there were features they could introduce called nudges where people might be going down rabbit holes where potentially harmful content could be nudged toward something that she said could be more inspiring. facebook did release some of its own research ahead of this hearing, but she could not commit when pressed to full transparency. >> i know that we have released a number of the reports, and we are looking to find ways to release more of this research. i want to be clear that this research is not a bombshell. >> reporter: this is not the end of it for facebook. the senate committee has thousands of pages, it says, from a whistleblower who also provided evidence to the wall street journal. that whistleblower whose identity we don't yet know is set to testify next week. clare sebastian, cnn, new york. now, an american women's