Eventually, the blob of molten material beneath Canada split in two and the stronger one slowly shifted toward the blob ...

Geomagnetic reversals may sound like science fiction, but they’re a real part of Earth's history. In this video, we break down what happens when the North and South Poles switch, and how this ...

This shift was captured by satellites. Earth has lines of magnetic force looping from North Pole to South Pole, creating Earth's protective magnetosphere.

However, the pole is moving faster than researchers expected, and it the most up-to-date location information was simply too inaccurate to allow it to remain on the books without an update.

That shift has accelerated in recent years, and current estimates suggest that the pole is moving at almost 40 miles a year.

The polar vortex is stirring up, bringing the earliest hints that the seasons are changing. When will Wisconsin see its first freeze?