![VPR News show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/045/750/small/vpr-news-from-vermont-public-radio.jpg)
Summary: Four years ago, a huge fireball appeared over the small Quebec town of Lac Megantic. The fireball was from an explosion caused by a runaway train that crashed into the downtown. Nearly 50 people were killed. That tragedy is being examined again this week in a courthouse in Sherbrooke, Quebec, where three railway employees are on trial for criminal negligence.