Jessica Alexander talks about what inspired her to become a foreign aid worker, and how her ideals clashed with reality when she was sent to Rwanda following the genocide there. Laurel Sturt describes the challenges of teaching at an elementary school in a poor Bronx neighborhood. Helen Fielding discusses returning to Bridget Jones in her new novel. We’ll get a history of maps going back to ancient times. And Silicon Valley’s Tom Kelley explains how we can tap into our own creativity to change our workplaces and our homes.