Nearly 15 percent of people worldwide believe the world will end during their lifetime and 10 percent think the Mayan calendar (mayan-calendar.html) could signify it will happen in 2012 (disaster-prophecy-predictions.html), according to a new poll. The end of the Mayan calendar, which spans about 5,125 years, on December 21, 2012 has sparked interpretations and suggestions that it marks the end of the world….