This week we're celebrating exciting science and entertainment focused on Mars, by listening back to two interviews about the fascinating red planet. We're joined by "lifelong space nerd" Andy Weir, to talk about "The Martian," his gripping debut novel that was recently adapted into a big-budget movie. And we're joined by journalist Elmo Keep, to talk about her article on Mars One, a nonprofit that claims to be planning a reality show about a one-way trip to establish a Martian colony.