For biologists like Heiko Jansen, grizzly bears offer a fascinating opportunity to analyze seasonal metabolic changes ...

The last grizzly bear seen in California was 101 years ago. A new study found that reintroducing the mammal into the state’s mountainous wilderness is feasible. California could potentially host ...

After years of preparing for reintroduction, federal agencies go radio silent on plans to transport grizzly bears to the ...