India, Sept. 12 -- "Please return to your seat and fasten your seatbelt." That's one cabin announcement that you could be hearing more often in the next few years, as turbulence is predicted to become more frequent due to global warming. In fact, these admittedly, pretty unpleasant in-flight situations could be set to double or even triple! By Travel + Leisure Over the next few decades, the fasten-seatbelt sign could be lighting up more often when you travel by plane. This is one of the key conclusions of a study conducted since 2013 by a professor of atmospheric science at the University of Reading in the UK. According to information reported by

, global warming could be modifying turbulence, the situations that occur when there is a su...