"We've gone from this concept of dead birds don't fly to this new virus that seems to be a bit more like dead bird flying," explains Erik Karlsson, head of the Virology Unit at the Institut Pasteur du ...

A little over a year ago, Marcela Uhart was walking on the beach in Punta Delgada, Argentina. It was peak breeding session on this peninsula known for its rich marine wildlife. Usually, the salty ...