In March 2011, Japan was hit by a giant earthquake. This was followed by a tsunami (a series of huge ocean waves generated by the earthquake) which swamped and destroyed the emergency cooling pumps at the Fukushima nuclear plant (pictured) in Japan. Result: several reactors melted down in the second most serious nuclear accidents ever. Even so, nobody died because of it whilst around 18,500 people died due to the earthquake and tsunami.

Germany has decided to get rid of all its nuclear power stations by 2020. The idea is to have all electric power generated by renewables - a great idea - but the reality is that Germany is building more dirty coal-fired power stations.