By withdrawing from the Paris accord, the United States—the second-largest global emitter—could undercut collective efforts to reduce emissions, transition to renewable energy sources, and lock in fu…

Atmospheric rivers are gaining in intensity across California and the western United States. Communities need to adapt to the havoc wrought by this weather phenomenon.

The U.S. abdications of the Covenant of the League of Nations and the Paris climate accords may be remembered as bookends to the American century.

Each Friday, I look at what the presidential contenders are saying about foreign policy. This Week: President Joe Biden spoke with Time magazine about the importance of alliances to U.S. security.