Forget yawning! Scientists say that PEEING is contagiousYawning and urination can be contagious behaviors observed in both chimpanzees and humans, highlighting social and evolutionary aspects.
Revenge of the Tipping Point by Malcolm Gladwell review same theory, but a bit drearyGladwell's 'Revenge of the Tipping Point' presents diverse themes but lacks a clear unifying narrative, leaving readers unsatisfied with its complex exploration.