National Geographic Magazine's February cover story reveals new secrets about how our brains function, find out about an individual nerve cell that responds only to pictures of actor Jennifer Aniston. Allahabad's Kumbh Mela is also in focus: A live demonstration of the theory of "collective effervescence", posited by French sociologist Emile Durkheim, that suggests that crowds have a positive impact on the health of the individual. In addition, readers can also learn about The Yukon's goldrush and how a 15th-century goldsmith created Florence's miraculous dome of the Cathedral of Santa Maria del Fiore.
