Funeral proceedings began for Ayatollah Ali Khamenei, who led the country for more than three decades and was killed in the U.S.-Israeli attacks. The remains of a police station in a photograph taken ...

How are you making sense of this news? Whether you already understand some of the context or whether it’s all new for you, we hope our free materials can help. By Katherine Schulten Nicholas Kristof, ...

Explore a wide range of recent research in mathematics. From mathematical modeling to why some people have difficulty learning math, read all the math-related news here.