Facebook Co-Founder and Chief Executive Officer Mark Zuckerberg and Chief Operating Officer Sheryl Sandberg will debut “a new Facebook tool that has the power to save lives” in two ABC News interviews tomorrow.

Zuckerberg will preview the new tool for Robin Roberts at Facebook’s headquarters in Menlo Park, Calif., on “Good Morning America.”

Then on “World News with Diane Sawyer,” Sandberg will sit down for an exclusive interview with Sawyer, during which she will discuss the personal stories behind the social network’s new initiative and what Facebook hopes to accomplish.

ABC News said portions of the interviews will also be featured on “Nightline,” its “Newsmakers” series with Yahoo, ABCNews.com, ABC News Radio, and ABC NewsOne.

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