By thinking different, scientists can make extraordinary breakthroughs. Learn about the creative cogitation that led to the discovery of dark matter and the invention of a.c. power grids, disinfectant, and the Greek “death ray.” Also, whether one person’s man of genius is another’s mad scientist. And, the scientist who claims pi is wrong and biopunks who tinker with DNA – in their kitchens and on the cheap. Plus, from string theory to the greenhouse effect – how metaphor sheds light on science. Discover why your brain is like a rain forest (that’s a simile!). Guests: •  Anil Ananthaswamy – Corresponding editor for New Scientist magazine in London and author of The Edge of Physics: A Journey to Earth’s Extremes to Unlock the Secrets of the Universe •  Marcus Wohlsen – Reporter for the Associated Press, and author of Biopunk: DIY Scientists Hack the Software of Life •  John Monahan – Author of They Called Me Mad: Genius, Madness, and the Scientists Who Pushed the Outer Limits of Knowledge •  Michael Hartl – Physicist, creator of “Tau Day” •  James Geary – Author of I Is an Other: The Secret Life of Metaphor and How It Shapes the Way We See the World Learn more about your ad choices. Visit megaphone.fm/adchoices