The Anthropocene is the name scientists have proposed for the geological epoch that we are currently in, when humans have become a significant driving force shaping Earth’s climate, ecosystems, and biodiversity. We may now be on the cusp of a revolution in computing and robotics in an era of artificial intelligence that raises a question: […]

Numerous fires, landslides, floods, labor strikes, polluted air, epidemics, Depression, recessions, financial collapse, one adversity after another. Any one of these might spell the end of a lesser community. But, in Arizona, one town survived these “near-death” experiences, and more; yet managed to survive. Some might even say, “thrive.” This presentation looks at the numerous […]

Arizona’s history of the LGBT+ community begins long before Arizona was a state with the Native American belief of two-spirits and continues through to the seismic shift of Civil Union/ Marriage Equality. There are some surprises along the way such as artists and Arizona connections to Warhol, Keith Haring, and those muscle magazines by George […]

There’s nothing like standing under a dark, star-spangled night sky to quiet the mind and reduce stress, share an experience of awe with family and friends, and to inspire creative thoughts. Yet such dark skies are a disappearing resource, with only 20% of the world living in a place where the center of our Milky […]

Tulsa, Oklahoma’s Greenwood district was coined “Black Wall Street” because it was a thriving African American community that boosted hospitals, churches, shopping centers, schools, and banks. But all that changed, on May 31, 1921, when an angry mob stormed the town and burned everything to the ground. This presentation will explore what made Black Wall […]

Communication and secrecy were key to the successful operation of the Underground Railroad. Safety was more important than quickness. Both fugitive slaves and members of the Underground Railroad learned to code and decode hidden messages, and to disguise signs to avoid capture. There were code names for towns on the routes and code numbers for […]

This presentation covers humankind’s water use and food supply interactions with Arizona’s ecology from Clovis culture hunter-gatherers to prehistoric irrigation canals, contemporary Hopi and Tohono O’odham dry farming, and present-day American farmers. We will examine how overhunting and climate change affected the wooly mammoth populations and the agriculture experiments that followed. From early attempts to […]

This presentation examines the remarkable living structures built by the people who first lived in the canyons of the Sierra Ancha wilderness during the early Middle Ages. The architectural dwellings reflect the culture and history of these people and help us understand their contributions to life in the Arizona desert. The presentation includes numerous photos […]