The Sun Dagger: How Ancient Puebloans Made Calendars from Sunlight

The Sun Dagger: How Ancient Puebloans Made Calendars from Sunlight

Before cal­en­dars were print­ed, before clocks ticked, and before num­bers were writ­ten, humans looked up. We looked up at the sky not just to admire the beau­ty of the stars and celes­tial bod­ies, but also to pre­dict the best times for plant­i­ng and har­vest­ing crops. So stargaz­ing was not just an enjoy­able endeav­or; it was a method of sur­vival. In

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Mayan Mathematics

Mayan Mathematics

The Maya civ­i­liza­tion thrived in what is now south­east­ern Mex­i­co, all of Guatemala and Belize, and parts of Hon­duras and El Salvador.