(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.

Of the many stresses and worries of everyday modern life, the one thing we generally don't need to be concerned about is being eaten. At the top of the food chain, it has been millennia since we took ...

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 ...