Einstein proposed his special theory of relativity 120 years ago, and despite numerous attempts to challenge it, the theory still remains intact and valid. It is a simple but powerful concept that ...

Looking for new ways to get students reading and responding to nonfiction? Try these exercises for discussion, writing and speaking. By Peggy Dimock Lead poisoning can cause lower I.Q.s ...

Starbucks ended a 7-year-old policy that invited anyone to hang out in its stores or use its restrooms, regardless of whether ...