Aspirations to return American astronauts to the moon after a nearly half-century absence should be rooted in science, not foreign policy.

Fifty years ago, a photo of Earth rising beyond the lunar horizon captivated the world and inspired the modern environmental movement. Humans have since despoiled the planet to the brink of environme…

The United States needs to champion international cooperation and work toward collective rather than unilateral security in outer space. 

Questions of legitimacy have long plagued the G7. The Trump administration's announcement of the Trump National Doral resort as the venue for next year's summit marks a new low.

Policymakers should take a global approach in formulating artificial intelligence policy.