This week, nuclear expert Mycle Schneider, formerly an adviser to the French and German governments has said that he's deeply worried about contaminated cooling water leaking from tanks at the site of the Fukushima nuclear reactors.- Huge amounts of energy can be released by joining or fusing small atoms together to make larger atoms, or by splitting apart larger atoms like uranium.- In nuclear reactors, atoms such as Uranium 235 and Plutonium 239 are bombarded by neutrons which causes them to split in two, a process called fission.- When atoms undergo fission, they often release more... Like this podcast? Please help us by supporting the Naked Scientists