Unusual spike in whale deaths in Canada, US sparks probe

Endangered right whales are dying at unusually high rates in the Atlantic Ocean off Canada and the northern United States, sparking an investigation by authorities in both countries, officials said Friday.Thirteen of the massive, bus-sized marine mammals have been found dead this year, a large number considering the entire population numbers just 450-500, said experts at the National Oceanic and Atmospheric Administration (NOAA).David Gouveia, protected Species Monitoring Program branch chief at