United States December 29, 2017 4:45 pm Patients Transported to Hospital After Mattapan Line Crash Two trolleys crashed on the Mattapan Line, sending patients to area hospitals. US & World Videos 1:35 Understanding the Biden administration's plans to reclassify marijuana 1:45 NYPD enters Columbia University in riot gear to clear protest 4:28 ‘Apples Never Fall' and ‘Jurassic Park' star Sam Neill reveals his real name 3:21 Katy Perry's surprising regret about cheeseburger Met Gala look 3:40 Exploring the Meet Boston Regional Career Fair