MIT building evacuated after hydrogen erupts in flames in an enclosed space in one lab

Cambridge firefighters responded to MIT's Building 18 at 21 Ames St. after hydrogen burst into flames inside a hood shortly before 12:30 p.m.

The fire, in Rm. 121 on the first floor, forced the evacuation of the entire building.

Firefighters reported the fire was knocked down shortly after 12:40 p.m.