Health April 27, 2021 6:48 am Walpole Woman Warns of Silent Heart Attack Risk After a study found the majority of people who had a heart attack were unaware of it, a Walpole woman who is sharing her own experience as a warning to others. US & World Videos 2:04 Newton dentist office aiming to keep kids comfortable 2:08 Tension grows over campus protests in Boston 1:53 Opening statements begin in the Karen Read trial 2:31 Fallen Billerica Police Sgt. Ian Taylor honored at vigil 2:39 MIT president calls for shutdown of student encampments