Here Are the Latest Theories on Subjects That Have Intrigued and Puzzled Students and Scholars Alike While many of these subjects have been treated before in other series, our authors have unearthed new theories and information based on the latest scientific investigations of available evidence. Firsthand experience helps our authors provide new perspectives and theories on these occurrences that will keep your readers fascinated. What is the secret behind Atlantis? Was there ever such a fabled city and island? Here is a look at all the tales, from Plato's story to strange theories and archaeological facts.