A study of weaning age in fossil elephants gives hints about the cause of their extinction

The extinctions of many giant mammals, like mammoths, at the end of the Ice Ages is a story that most people know about. The causes of these extinctions have long been debated in the scientific literature. Climate change and over-hunting by humans, as well as a combination of these, have all been argued. New techniques for interpreting life-history data from fossil tusks may help tease these causes apart.
Paleontology News — ScienceDaily