Guest Opinion. Altruism is helping without a benefit and sometimes at a risk to one’s self. Animals helping others of their own species makes sense to perpetuate the species or help continue their own ...

There are few things more joyful, if occasionally nerve-wracking, than having a pet in your home. And plenty of people agree.

(The Hill) – The persistent presence of humans and their infrastructure in U.S. national parks has yielded dramatic changes in the behaviors of large animals who live there, a new study has found.

What did early humans like to eat? The answer, according to a team of archaeologists in Argentina, is extinct megafauna, such as giant sloths and giant armadillos. In a study published in the journal ...