Boston July 19, 2019 11:15 pm Heat Emergency Declared in Boston Air conditioners will be blasting all weekend long as Boston prepares for a dangerous heat wave. US & World Videos 2:21 Karen Read trial | First responders recall scene of John O'Keefe's death 5:50 Tensions remain high on college campus amid Israel-Hamas war 2:03 Wake held for Billerica police officer hit by excavator last week 2:03 Human remains, including a skull, found in Easton, sources say 2:42 High costs for children's mental health