government permit to go in for just two hours. we drove through desolate roads, half collapsed homes, and this, an elementary school where we found the graduation sign still hanging from march 11th. >> it's tough to describe. >> reporter: on the roof, a clear view of the fukushima nuclear plant. 3,000 people still work there preparing to remove fuel rods from reactors. workers complain about the stress and low pay, and the world health organization says a third of them now face increased risk of thyroid cancer and leukemia from radiation exposure. radiation fears have already driven thousands of namee families out of the region. they hope these photos will one day lure them back.