Whose century is it? Depends on whose calendar you're using. Anthony Aveni, author of "Empires of Time: Calendars, Clocks & Cultures," and a professor of astronomy and anthropology at Colgate University, kicks off this new podcast with a discussion of how and why different cultures structure time and imbue time with meaning, and how time can be harnessed as a power tool, from the ancient Maya to modern Chinese.