The world's largest aircraft has been unveiled -- and it's a mammoth

Who says our visions of a blimp-filled future are passé? Behold the Airlander, a hybrid air vehicle that's part blimp, part airplane, and part helicopter. Experts are calling it a 'game changer' — and it could revolutionize the transport industry. » 2/28/14 4:00pm 2/28/14 4:00pm