electrostatic writes "In a Nature.com oldie-but-goodie, a physicist says he has solved a problem that costs airlines millions every year: what is the quickest way to get passengers aboard an aircraft? Boarding is a serious issue for airlines, particularly those operating short flights that run several times a day, yet boarding times have steadily increased for decades. Back in 2005 Jason Steffen of the Fermilab in Batavia, Illinois said the method used by many airlines to this day is almost the worst. 'The best way to board, according to the researchers, would be a row-by-row, seat-by-seat, strict order. That would mean everyone lines up, row 25 first. I can't imagine fliers will go for that. Next best, they say, would be boarding all the window seats first, followed by those in the aisle. Obviously that's not practical, at least for couples or families traveling together.'"