Though we don't look much like them, we humans have a lot in common with bonobos and the three other great apes—the chimpanzee, gorilla, and orangutan. Compared to the lesser primates, such as ...

For many of us, it may be hard to imagine that if we went back far enough in time—more than 55 million years, when the first primates are thought to have lived—that our great-a-million-times ...

Throughout human history, twins have been rare, which often makes them seem extraordinary. Across various cultures, twins are symbols of strength and health, while in others, they represent ...