Violence continues to rage more than a decade after the Mexican government launched a war against drug cartels.

The G20 summit comes amid tensions over trade, climate, and refugee policy and increased uncertainty over the U.S. commitment to multilateral institutions.

U.S. space exploration inspired a generation of students and innovators, but NASA’s role has diminished, and the number of global space competitors is growing.

With President Donald J. Trump advocating for deep cuts to U.S. foreign aid, debate has renewed over the role of foreign assistance funds in boosting growth, promoting democracy, and saving lives.