The definition of our own species isn’t as clear cut as many might think. Explore the intricate nuances of our identity, examining factors like bipedalism, brain development, and societal structures.

Scientists have debated the definition of life for decades, but they still lack a consensus on the answer. Experts believe that "edge cases" make life difficult to define and blur boundaries across ...

Meet Betty, a typical aging American. At 82, she spends almost as much time with her doctors as she does with her grandchildren. She has to. She takes seven prescription medications to treat her high ...