code: private static boolean containsGreekLetter(String s) {
      Matcher m = biogreek.matcher(s);
      return m.find();
    }
docs: Somewhat ad-hoc list of only greek letters that bio people use, partly
  to avoid false positives on short ones.
  @param s String to check for Greek
  @return true iff there is a greek lette embedded somewhere in the String