Our environment is changing rapidly, largely as a result of human activities, leading to a significant decline in ...

In humans and wild animal populations, immune responses can vary greatly between individuals, species, and environments -- yet, the vast majority of immunological studies are conducted on well-fed, ...

Millions of animals are at risk, but what are the rarest animals in the world? These are some of the most endangered animals, teetering on extinction.

Drastic declines in biodiversity due to human activities present risks to understanding animal behaviors such as tool use, according to new research. Shrinking animal populations make the study of ...