The federal agency tasked with weather forecasting and research has played a growing role in climate policy, but also faced controversy during the Trump administration. What does NOAA do?

Vaccines are a major public health success story, but the COVID-19 pandemic underscores the many challenges involved in getting a vaccine to everyone who needs it.

The Delta variant is driving new COVID-19 surges, even as countries around the world make gradual progress in vaccinating their populations. Five graphics show how the strain is taking over and who’s…

If the Trump administration succeeds in securing citizenship data, the 2020 census could transform the way in which political power is distributed in the United States.

A look at the post-9/11 war powers law that the Trump administration could use to justify conflict with Iran.