No one knows why the river of liquid iron flowing 1,400 miles beneath our feet just reversed course.

Iron is the most abundant element by mass on Earth. Despite being so common and well-studied, iron still manages to puzzle scientists by exhibiting electric and magnetic behaviors that are not fully ...

Ice can pull iron from soil minerals faster than cold liquid water, overturning assumptions about chemistry in frozen Arctic ...

Scientists have measured the density of liquid iron -- the main component of rocky planet cores -- under conditions similar to Earth's liquid core: 1,000,000 atmospheres and 4,000 degrees Celsius.