English: Paul Martin's "overkill hypothesis" prevails over the climate hypothesis when the timing of megafaunal extinctions in different locales is considered — especially when paired with time of first arrival by humans. This poster was created by Connie Barlow, 3 years after her 2001 book, The Ghosts of Evolution, was published. In 2005, Paul S. Martin and 4 of his colleagues published a paper highlighting the importance of, what they called, "asynchronous extinctions." doi.org/10.1073/pnas.05027771