Add Yahoo as a preferred source to see more of our stories on Google. The science of hot air balloons: How do they work? ALBUQUERQUE, N.M. (KRQE) – Soon, hundreds of hot air balloons will fill the ...

ALBUQUERQUE, N.M. (KRQE) – Soon, hundreds of hot air balloons will fill the Albuquerque sky as part of the Albuquerque International Balloon Fiesta, but what goes into making a balloon fly? The answer ...