This year marks the 25th anniversary of world's worst nuclear disaster. In the early hours of April 26 1986 a series of explosions and a resulting chemical fire released large amounts of nuclear matter into the atmosphere over of much of Europe from Chernobyl's number 4 reactor.
Following the March 11 earthquake and tsunami in Japan which crippled the Fukushima nuclear power plant it is surprising to hear that over 50% of the radiation we are subjected to come from Radon Gas which occurs naturally in the ground. And as we approach the 25th anniversary of Chernobyl we look at our exposure to radiation.