This work was created as a response to the nuclear power plant explosions at Fukushima Daiichi. In the interactive installation Radio Nippon, data from 652 Geiger counters all over Japan are retrieved to create a radioactivity audio map. These real time readings from each counter are transformed into sine waves which become audible when the user moves the tuner over the respective counter coordinates. Of particular note is the area of Fukushima, in central Japan, still exhibiting dangerous levels of radiation. These data were collected by official government counters and there were strong indications amongst the public that they misrepresented the true magnitude of the disaster.