Strings of radars stretching across Canada were built to give early warnings of Soviet bombers coming over the Arctic. The ...

The Yukon Territory glows—but not with city lights. “Everywhere you look is like a painting” here, with auroras that last for ...

Many American schoolchildren grow up learning that Yellowstone was the world’s first national park. But across the globe in Mongolia, just south of the capital, Ulaanbaatar, a mountain holds a claim ...