How ships bring agonising death to last Greek whales

Government promises action on collisions to avoid slaughter on busy shipping routes

In an office up a steep hill in a seaside suburb of Athens, a tiny blue light flickers from a computer terminal. Dr Alexandros Frantzis, Greece's foremost oceanographer, points it out. The light, he says, tracks marine traffic "in real time".

It is key to saving one of the world's most endangered whale populations.