Phoenix has a long history shaped by ancient civilizations, frontier expansion, and economic booms. The Hohokam built canals ...

Phase two of a project aimed at identifying historically significant structures, buildings and neighborhoods with ties to Tucson’s Black community is underway.

This story appears in the September 2017 issue of National Geographic magazine. Patrick Perotti scoffed when his mother told him about a doctor who uses electromagnetic waves to treat drug addiction.

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