The suspect who ambushed and killed four police officers at a coffee shop near Tacoma, Washington, may have been shot by one of the victims, police say. FULL STORY

Andrea Ivory goes door to door -- 20,000 and counting -- to sign up uninsured women for free mammograms. She's one of this year's top 10 CNN HEROES being honored on CNN. Watch at 8 & 11 p.m. ET/PT Sunday.
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