The federal agency has a broad mandate to protect Americans’ health and an expansive global reach. But the COVID-19 pandemic has been one of its most daunting challenges.

Responsible for powering the country and its economy, the U.S. energy grid has come under increasing strain due to climate change, and the threat of cyberattacks looms.  

The European Union has navigated a thicket of external and internal crises in recent years, including mass migration and Brexit. What are the union’s core institutions, and what roles do they play?

Since its postwar founding, the UN agency has garnered both praise and criticism for its response to international public health crises, including the COVID-19 pandemic.

The U.S. census, one of the few in the world to directly count every resident, is used to distribute political power and federal funding. The 2020 count has faced pandemic-related complications and a…