Adam Goldstein, the 23-year-old Hipmunk co-founder, has been dabbling in travel search since he became the de facto travel agent for his debate team at the Massachusetts Institute of Technology (MIT).

BBC: The future of travel search

He just briefly ran through some of the themes, from a growing trade relationship to the joint search for Americans missing in Vietnam and the long-term effects of America's use of the defoliant Agent Orange in the war.

NPR: Bush, Triet Talk Trade, Human Rights