TOKYO — Japan on Friday revised a roadmap for the tsunami-wrecked Fukushima nuclear plant cleanup, further delaying the removal of thousands of spent fuel units that remain in cooling pools since the 2011 disaster. It's a key step in the decades-long process, underscoring high radiation and other risks. The government and the plant operator, Tokyo Electric Power Co., still keep a 30- to 40-year completion target.
A look at some of the challenges:
MORE THAN 4,700 UNITS OF FUEL IN POOLS