12 May 2011 Updated at 09:32 ET
Setbacks at Japan nuclear plant
Workers found a water level monitoring gauge at reactor 1 was faulty
Japan quake
Japan nuclear owner agrees deal
Japan 'to review energy policy'
Chubu set to close nuclear plant
Back to school in quake-hit Japan
A reactor at Japan's crippled nuclear plant has been more badly damaged than originally thought, operator Tepco has said.
link-
http://www.bbc.co.uk/news/world-asia-pacific-13374153