Laptops and phones in the classroom can lower everyone’s test scores, a new study finds.

People who start learning English as a second language by age 10 or 12 can still become grammar experts, researchers say. The finding suggests people can learn languages well over a much longer period than previously thought.

People who post on social media want their offerings to garner legions of likes. Most readers also tend to share those posts that have gotten a large quantify of “likes.” So very popular posts go on to become even more popular. This can greatly affect what goes viral.