Lightning near the North Pole reveals dramatic climate changes as Arctic temperatures rise and storms intensify.

A new study reveals a strong connection between Arctic warming and the development of a rare thunderstorm that came closer to the North Pole than any previously recorded.

This storm began over the Arctic ice sheet, moved toward the North Pole, crossed the Greenwich Meridian, and eventually dissipated in the Western Hemisphere. Remarkably, it came within just 44 ...