On Sept. 6, rapper and singer Mac Miller tweeted about his concert tour, set to kick off on Oct. 27. In less than 24 hours from the time of that tweet, Miller would be dead from a suspected drug overdose...

One day in late July, senior Chloe Keller was driving alone in her car, unaware of any danger that lurked ahead. She approached the intersection of 111th and Cornell Street, proceeding through it at the...