Tony Hale played Buster on 'Arrested Development' and is Gary Walsh on the HBO comedy series, 'Veep.' "There's a reason why I do anxious characters," he says. "It comes from a lot of personal anxiety." Commentator Sarah Hepola had to rethink her sex life after she quit drinking. She shares an essay about that experience. Jonathan Balcombe, author of 'What a Fish Knows,' says that fish have a conscious awareness — or "sentience" — that allows them to experience pain, recognize individual humans and have memory.