A new paper in Molecular Biology and Evolution, published by Oxford University Press, reports that Italian bears living in areas with many villages evolved and became smaller and less aggressive.

The study also cited increasing human populations and the resulting food waste as supporting the growing rat population. Though Boston’s rat population has been steadily increasing, it had only the ...

The fossil and genetic evidence agree that modern humans originated in Africa. The most genetically diverse human populations—the groups that have had the longest time to pick up novel mutations—live ...