Concerns for ageing Swiss nuclear reactors
The nuclear catastrophe in Japan has forced governments across Europe to take a long hard look at just how safe their own nuclear reactors would be in the event of an earthquake.
This is especially true in Switzerland, where there is a history of earthquakes.
Switzerland gets almost half its energy from nuclear power, but, critics say the Swiss reactors are ageing and may not be safe.
Imogen Foulkes reports.