As anyone who has traveled by plane in the last decade can attest, one of the few—perhaps only—things that make modern commercial flying tolerable is a strong onboard libation. For those lucky enough to travel internationally, the booze is sometimes even free. But could this last vestige of mile-high sanity be snatched from us like a water bottle at an airport security checkpoint? Newly released research argues that it should be. The study, published in Thorax by researchers from the Institute of Aerospace Medicine in Germany, concludes that in-flight alcohol can increase the risk of heart att…