Lower-risk lung screening could save countless lives

Lower-risk lung screening could save countless lives

Lower-risk lung screening could save countless lives

Now watching

Next video starts in : 7 Play

Lower-risk lung screening could save countless lives

Lower-risk lung screening could save countless lives
Replay video
Up next

White House admits it won't close Guantanamo Bay prison

White House admits it won't close Guantanamo Bay prison Up next

White House admits it won't close Guantanamo Bay prison