Humans are built for life on land, but what if evolution had taken a different path and sent us back into the ocean? To imagine this, we need to look at some of the ocean’s most incredible creatures ...

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 ...

Since Viking 1 landed in 1976, humans have studied Mars from afar, relying on rovers and orbiters to analyze the planet. But with NASA planning a human mission as early as the 2030s, that will soon ...