Labels:bulletin board | reckoner OCR: rhythms of ice advance and retreat Entire forests disappeared within several decades because of drastic drops in temperature and rainfall The warm rains returned with equal suddenness several centuries later. The evolution Of anatomical adaptations in the hominids not have kept pace with these abrupt climate changes, which would have occurred within the lifetime single individuals Still these environmental fluctuations could have promoted the incremental accumulation of mental abilities that conferred greater behavioral flexibility One of the additions during the ice ages was the capacity for human language In most of us the brain area critical to language is located just above our left ear. Monkeys lack this left lateral language area their vocalizations (and simple emotional utterances i ...
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