Over the course of evolution, the human heart has largely lost its ability to regenerate. Our distant ancestors were not afflicted by heart attacks—a condition that emerged primarily with modern ...

While aboard, astronauts have conducted thousands of studies, from tracking space’s effects on the human body to exploring ...

November’s supermoon is the second of three supermoons this year and also the closest: The moon will come within just under 222,000 miles of Earth. Tides may be slightly higher during a supermoon ...