Here is a review and excerpt at NPR from a book called "Globish: How the English language became the world's language" (by Robert McCrumb). Mr. McCrumb makes interesting points about how English is a democratic language with a highly interactive character, having been born of four invasions and a cultural revolution to people who live on an island and have a penchant for going all over the world. Read about it here.
And for you grammar geeks, here is the New York Times Magazine's column "On Language" for this week, in which we discover that the word "revert" has different meanings in Asia and with kids from the Bahamas. Check that out here.