Travel

The End of the Tour: Why Do We Travel?

Travel is commodity, a privilege, and a state of mind; a comfort to some and a trial to others. 

Fly the Friendly Skies in a Grease Powered Jet

A United Airlines jet is the first to take off using only fuels made from discarded fat.

Travel, Quarantine, and the Future of Tuberculosis

A 2007 tuberculosis case teaches us about contagion, travel, and quarantine.