Caltech students Eric Chang and Peter Buhler have been named two of this year's Watson Fellows. The fellowship enables graduating seniors to spend a year traveling around the world, exploring and learning about topics of their choice. Buhler will travel to British Columbia, Spain, and Chile to study how past, present—and possibly martian—life has flourished. Chang will head off to Asia, where he will learn how sustainable buildings can meet the world's growing demand for housing.