Leonard is back from vacation! He speaks with a psychologist and economist about why many people are so reluctant to accept that climate change is real, and what can be done to make people not only accept it, but to address it. We’ll learn about slime mold, a living organism fit for a sci-fi movie. Nurse and writer Theresa Brown takes us behind the scenes of a 12-hour shift in a hospital’s cancer ward. And we’ll look at how welfare reform has affected life for poor women who rely on public assistance.