Emotional tears are a uniquely human behavior. Research suggests they evolved not for eye health but as a powerful social ...

Add Yahoo as a preferred source to see more of our stories on Google. Guest Opinion. Altruism is helping without a benefit and sometimes at a risk to one’s self. Animals helping others of their own ...

While an increasingly small number of people, especially academic researchers, try to argue that nonhuman animals (animals) don’t really make friends, most people, including both researchers and ...

Many people, including animal advocates and others who want to grant legal rights (including personhood) to nonhuman animals, are often criticized for their views because others fear it will diminish ...