Three years after the quake and tsunami wreaked nuclear havoc at Fukushima, children are struggling to adapt to life - mostly indoors. Toru Hanai and Elaine Lies report in Koriyama, Japan.

Some of the smallest children in Koriyama, a short drive from the crippled Fukushima nuclear plant, barely know what it's like to play outside - fear of radiation has kept them indoors for much of their short lives.

Though the strict safety limits for outdoor activity set after multiple meltdowns at the Fukushima Dai-ichi nuclear plant in 2011 have now been eased, parental worries and ingrained habit mean many children still stay inside.