For millions of years, Earth's continents have been slowly drifting across the planet—and scientists believe they're heading ...

Disregard what you learned in geography class—Earth may not have seven continents after all. From the earliest of grades, schoolchildren around the world have memorized the same lineup: Africa, ...

Imagine running one marathon, an impressive feat by anyone’s standards. Now try to envision running seven marathons in as many consecutive days, all on different continents. The races began at Ultima ...