By EurekAlert Researchers at Tel Aviv University, and the University of Naples, have examined the mass extinction of large animals over the past tens of thousands of years and found that extinct species had, on average, much smaller brains than species that survived. The researchers link the size of the brain (in relation to the body size of each species) to intelligence, concluding that a large brain, which indicates – in comparison to different species of animals – relatively high intelligence, helped the extant species adapt to changing conditions and cope with human activities such as...