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 ...

At some point in a middle school or high school science class, you probably learned about the regenerative powers of certain animals. Worms cut in half can regenerate parts of their body; some lizards ...

Here’s what you’ll learn when you read this story: With more than 100,000 people in need of an organ transplant in the U.S. alone, scientists have turned toward perfecting human-animal chimeras as a ...

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 ...