Congress and Facebook, Printed Food, Earthrise

Why Facebook is having, what some are calling, a “Big Tobacco” moment. Then, a 3D printer that prints food and cooks it with lasers as it prints. And, an astronaut shares the lessons she learned while up in space. Also, on today’s show: some potential reasons why over four million Americans quit their jobs in August; animals are evolving rapidly to keep up with the demands of climate change.