Fukushima seven years later—case closed?

On March 11, 2011, a nuclear disaster struck Japan. The 9.0 magnitude Tohoku earthquake triggered a 15-meter tidal wave, which hit the Fukushima Daiichi Nuclear Power Plant approximately 45 minutes later. The plant’s power was knocked out and the backup generators crippled. After the emergency batteries were exhausted, three of the plant’s six reactors soon overheated, and at least two of the cores melted down, releasing immense amounts of radiation. While the reactors are now in theory stabilised, the work to understand and contain the damage continues.