US charitable institutions rapidly changed in the 1780s as Americans established groups to support people in need and to reform society.

When you’re upset, finding a new way to think about a negative situation can help you feel better. But researchers find the process takes some effort to really work.

Today’s AI systems are powerful, and it’s natural to see them as having humanlike intelligence. Shaking that illusion is important – and difficult to do.

From the Black Death to the COVID-19 pandemic, combining the genetic data of a pathogen with historical records, archaeological artifacts and epidemiological studies can uncover its origins.