This talk explores Sunset Crater, Arizona's youngest volcano, erupted 940 years ago, impacting the Sinagua people. Geologist Dr. Jeffrey Meyer will share its story and his work mapping the unique

This talk explores Sunset Crater, Arizona's youngest volcano, erupted 940 years ago, impacting the Sinagua people. Geologist Dr. Jeffrey Meyer will share its story and his work mapping the unique Bonito lava flow, notable for traveling uphill.

Understanding this flow aids hazard prediction and interpreting past flows on Earth, the Moon, and other planets. Dr. Meyer, a retired geology instructor, became curious about the Bonito flow, leading to detailed mapping via Lidar.

This program is made possible by Arizona Humanities and sponsored by Findlay Subaru of Prescott. Learn more at: Natural History Institute | Events | Donate | Instagram | Facebook

Kelly Matheson, representing WITNESS, delivers a talk on atmospheric trust litigation (ATL) and the fundamental right to a sustainable living environment. Her presentation highlights critical

Kelly Matheson, representing WITNESS, delivers a talk on atmospheric trust litigation (ATL) and the fundamental right to a sustainable living environment. Her presentation highlights critical legal approaches to climate change.

Through compelling personal stories and illustrative videos, Matheson vividly demonstrates how climate change profoundly affects young people globally. This talk was originally published on August 2, 2012.

In 2015, the Plastic Pollution Coalition (PPC) released a video narrated by notable supporter, actor Jeff Bridges. Learn more at