ENCORE 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!).
First aired May 23, 2011