The President of the Mars Society and author of The Case For Mars says we should have humans on the red planet by the end of the second Obama Administration. You'll hear what he thinks of NASA's current plans and the report by the Augustine Committee on human spaceflight. An inflatable space station module has Bill Nye's eye. Emily Lakdawalla finally answers one of her own questions in her Q&A segment, and it's a real foundation shaker. It's a big week for Bruce Betts. .