<http://schema.org/alternativeHeadline>
"Amid all those air travel horror stories, there's some good news. Imagine boarding a flight in less than four minutes. Dr. John Steffen, an astrophysicist, says he's found a way."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/green-tech/transportation/videos/astrophysicist-solves-mystery-of-slow-plane-boarding>