Audubon’s new tool, the Bird Migration Explorer, is a groundbreaking interactive map tracking bird migrations for 450 different species worldwide. “Groundbreaking” isn’t hyperbole. There’s never been anything like it, and the amount of data compiled onto one site is an enormous collaborative accomplishment. This week Postlight’s Nathan Henry and Shawn Kelly chat with Melanie A. Smith and John Mahoney from Audubon about creating The Explorer and getting people involved in birding and conservation.