As big cat populations shrink, inbreeding is threatening their survival, leading to genetic defects and weaker offspring.

It's spring, the birds are migrating and bird flu (H5N1) is rapidly evolving into the possibility of a human pandemic.

Elon Musk is taking the long view. The billionaire SpaceX founder has long said that humanity needs to expand its footprint ...

Bobcats are silently thriving in cities across the United States, using green spaces, alleys, and suburbs to live, hunt, and ...