Listening to Leviathans: Sounds from the deep

Norwegian technology, courtesy of the 19th-century whaler Svend Foyn, played a critical role in establishing the modern era of industrial whaling.By the time the 1960s rolled around, most large whale populations hovered on the brink of extinction. Now, Norwegian researchers are testing new technologies so they can track and study these marine giants — and help protect them. This week, tapping into fibre-optic cables to eavesdrop on whales in a way that's never been done before— and how deploy...