MICHAEL BECKLEY is Associate Professor of Political Science at Tufts University, a Nonresident Senior Fellow at the American ...

As Trump angers everyone from Canada to China, Americans are growing afraid to travel abroad — and it could get worse.

These stunning and mysterious natural wonders have captivated humans for centuries — and you can visit them yourself.

Scientists discover massive deposits of this valuable resource sitting beneath the feet of millions of Americans.

The oldest crust on Earth, known to be unchanging, is actually being altered in real time. The North American continent is ...

Numerous land areas of the Earth sit below average sea level. These locations can number a surface elevation of just a few ...

The deep roots of Earth's oldest continents have long been thought to be unshakable. But a new seismic discovery suggests that even these stable landmasses can change. Beneath the center of North ...