Evolution didn’t stop — it just changed direction. Technology, medicine, and environment now influence how humans adapt. The next phase may look very different from our past.

In this excerpt from "Sink or Swim," author Susannah Fisher explores the future of human migration, and what that will look like based on the difficult choices we make in the coming years. When you ...

Thinking about human appearance far into the future tends to drift into science fiction, but the question is rooted in real science. Human bodies have never been fixed. They have shifted with climate, ...