599. The World's Most Valuable Unused Resource

It’s not oil or water or plutonium — it’s human hours. We've got an idea for putting them to use, and for building a more human-centered economy. But we need your help. SOURCES: Nathan Dietz, research director at the Do Good Institute at the University of Maryland. Al Roth, professor of economics at Stanford University. Krista Wyatt, C.E.O.