Explosion at nuclear plant in Japan

AlJazeeraEnglish on Mar 12, 2011
After the devastating earthquake off the coast of north-east Japan damaged the cooling system of several reactors at Fukushima's nuclear power facility, a large explosion appears to have blown the external walls and roof off one of the reactor buildings.

Al Jazeera's Sonia Gallego reports on what this means for the safety of the plant - and of the thousands of people who live nearby.