In the spirit of the new year, we asked two dozen business and management leaders what projects they’ll take on in 2011. Here they share their answers—which range from shaking up the study of economics to lifting the quality of discussion on the internet. We expect these people to make significant headway during the year, and we hope their efforts will inspire HBR readers to pursue similarly lofty projects.

A version of this article appeared in the January–February 2011 issue of Harvard Business Review.