Watch video above to see these stories on AZ Illustrated Science on Tuesday, Feb. 4:

AZ'S GEOLOGICAL COMPLEXITY: This excerpt from hour-long documentary "Under Arizona," produced by Eight, Arizona PBS in Phoenix, explores complexity of state's geology.

AZ GEOLOGY: Jon Spencer, senior geologist with the Arizona Geological Survey discussed Arizona's distinct geology, which has led to a number of important scientific discoveries that have shaped the way geoscience is practiced.

CAVE FEST: This weekend, Kartchner Caverns State Park is hosting Cafe Fest, a special event to let people explore some of the science of the cave.

KARTCHNER CAVERNS: Second excerpt from hour-long documentary "Under Arizona, produced by Eight, Arizona PBS in Phoenix, takes us underground at Kartchner Caverns State Park.

MINING SAFETY: People who work underground in Arizona's mines face a number of dangers that many of us who work above ground find hard to imagine. Eric Lutz, director of the UA's Mining Safety and Health Program, and Mary Poulton, department head for the UA Department of Mining and Geological Engineering explain.

AZ Illustrated Science is produced by Georgia Davis. Contact her at