Even though air travel is safer than ever and in many cases cheaper than 10 or 20 years ago, travelers love to complain about its agonies. Cramped and narrow seats, crying babies, chatty seat mates and armrest wars are common gripes. But other factors contribute much more to feelings of distress, especially on longer flights. The silent killers are altitude sickness and dehydration. These come on you gradually, and most people don’t even know what hit them, blaming their discomfort on “jet lag.” But help is on the way in the form of new commercial airliners constructed in large part of high-tech materials, including carbon-reinforced plastics. USA Today takes a deep dive into the science of “jet lag”, and how new aircraft designs (primarily the the Boeing 787 Dreamliner and the Airbus A350) are reducing the negative effect of these conditions. It’s a fascinating read for frequent flyers. To go there, click here.