How many hours do you sleep? How many minutes does it take to eat your cereal? Learn how clocks and calendars help you tick off the seconds, hours, days, and ye

Anthony F. Aveni gathers specialists from diverse fields to discuss temporal concepts gleaned from the people of Mesoamerica and the Andes. Essays address how t

2022 NATIONAL INDIE EXCELLENCE AWARDS WINNER — HISTORY: GENERAL ". . . inherently interesting, unique, and highly recommended addition to personal, profession

In the spring of 2010, Harvard Business School’s graduating class asked HBS professor Clay Christensen to address them—but not on how to apply his principle

SpringBoard Mathematics is a highly engaging, student-centered instructional program. This revised edition of SpringBoard is based on the standards defined by t