What are those white lines behind airplanes? Debunking 'chemtrails' theory
Contrails — the little white lines streaming out of an airplane — form when the hot air from the exhaust mixes with the cooler temperature and low-pressure environment.
How clever designs helped save 80 people after their plane caught fire, lost a wing and skidded down a runway upside down
When Flight 4819 landed in a fiery crash that ripped off a wing and rolled the plane upside down, panicked onlookers feared ...