The letter “x” often symbolizes something unknown, with an air of mystery that can be appealing. Illustration by Meilan Solly Even though “x” is one of the least-used letters in the English alphabet, ...

Historical revisionism and political correctness continue to gain space in the “Mailbag” section. Latest is the claim by Richard Bennett (Oct. 20) criticizing the Rev. Bryan Griem about yoga. Bennett ...

Mathematics was not invented by one man, but rather a great tale of the human search for understanding and explanation of the world. It developed over time, influenced by countless cultures and great ...

Top students can benefit greatly by being offered the subject early. But many districts offer few Black and Latino eighth graders a chance to study it. By Troy Closson From suburbs in the Northeast to ...