Last month's tsunami and earthquake in Japan caused serious damage to the Fukushima Daiichi power plant, a crisis which has brought the nuclear debate back to the table. Science correspondent Ian Sample explains what happened.
The rights and wrongs of nuclear power are also in the public eye because it's the 25th anniversary of the Chernobyl disaster in what is now Ukraine. In this podcast, James Randerson asks what lessons we have learned from nuclear accidents, and whether the UK should press on with its nuclear programme.
For the debate he's joined by environmental journalist and Guardian columnist George Monbiot, who's recently put the cat among the pigeons on the Guardian's comment pages; anti-nuclear campaigner and author Helen Caldicott; and former government advisor and professor of nuclear safety at the University of Central Lancashire Laurence Williams.
Listen to the debate and leave your comments below.
