Smithsonian researcher Sarah Johnson studies bison specimens to understand how the species’s genetic diversity changed after its decline ...

A new study reveals that habitat fragmentation can lead to sudden "tipping points" where a species' genetic health ...

If you follow media coverage of koalas, you could be forgiven for feeling confused. Recent stories describe a “koala paradox”: endangered in the north of Australia, abundant in the south; genetically ...

Some koalas may recover their genes after major population crashes. Growing koala populations may rebuild genetic strength over time.

Koalas’ population comeback may be doing more than boosting numbers—it could also be rebuilding their lost genetic diversity.