This episode deals with some of the major challenges facing humanity in the 21st century, and how we might best deal with them. The guest is well known futurist David Brin. David is an astrophysicist with a PhD in space science who serves on an advisory board to NASA. He’s also a bestselling science fiction author whose books have won numerous awards. One of his novels, “The Postman,” was made into a movie starring Kevin Costner. He’s also a nonfiction author whose recent works deal with the increasing surveillance in our society, the increasing difficulty of maintaining any kind of privacy, and the possible consequences of that. He’s also a popular speaker and consultant on a wide range of issues pertaining to technology and the future. Martin Wasserman hosts.