Ketamine's antidepressant effect, and bee brains find a way

In the news podcast, could Chinese scientists have found the mechanism that gives ketamine its antidepressant effect? Also, how a Cambridge researcher has laid the foundations for eliminating a form of blindness in English Shepherd dogs, and how bees find their way about with remarkable efficiency. Plus, the big questions in the search for extraterrestrials... Like this podcast? Please help us by supporting the Naked Scientists