Paul Theroux knows his way around the world. In masterful travel books, he transports readers to far-flung places with vivid prose. His new novel, The Lower River, recounts a man's ill-fated return to Malawi long after he first experienced the place as a Peace Corps volunteer. (Paul himself served there in the 60s.) He tells us about a one-time escape from Africa, then addresses listener questions about travel secrets...and epizeuxsis