geology

Stephen Eginoire

The Grand Canyon is famous for its complex geology that displays more than a billion years of Earth’s history. Now, park managers are just beginning to explore what’s beneath the visible surface—an extensive maze of caves.


USGS Astrogeology Science Center

Forty-nine years ago tomorrow, Apollo astronauts landed on the Moon. But first they came to Flagstaff to train. Friday night the city is launching a yearlong celebration of Flagstaff’s role in the lunar missions. KNAU’s Melissa Sevigny spoke with local geologist and historian Rich Kozak about that legacy.


Elise Rumpf/USGS

The fiery eruption of Mount Kilauea in Hawaii has devastated local communities. But it’s also helped researchers understand more about how volcanoes work. 


Rob Gay

When President Trump shrank the size of two national monuments in Utah, it left many hundreds of scientifically valuable fossil sites outside the new boundaries. Paleontologists are worried about their fate. KNAU’s Melissa Sevigny reports.


Kurt Refsnider

Geologists know there’s no better place to see Earth’s history laid bare than on the Colorado Plateau. Prescott College professors Kurt Refsnider and Kaitlyn Boyle make the subject come alive for their students in a novel way—from the seat of a bicycle. 


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