Deep Time: How Earth Keeps Time

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Photo illustration by Mark Riechers/Firefly (TTBOOK). Original image from Steve Johnson (CC0).

Are you ready to think in centuries instead of seconds? Eons instead of hours? It’s time to make thousand-year plans and appreciate how Earth keeps time. 

Shifting your mind to ‘geologic’ time

Geologist Marcia Bjornerud has a profound understanding of Earth’s deep history. The author of “Timefulness,” she says geologic literacy would give us a much healthier sense of time. 

Discovering the wonders of ancient cave art

Stephen Alvarez — a National Geographic photographer and founder of the Ancient Art Archive — has spent years documenting ancient rock art around the world. He takes Steve Paulson on a long hike in the Cumberland Plateau, where they find an “unnamed cave” with 2,000-year old engravings.

Making art inspired by the ancestors

Dustin Mater is a Chickasaw artist who’s fascinated by ancient rock art. He says these images resonate with stories he heard from tribal elders, which he uses as inspiration for his own art.  

Original Air Date: August 19, 2023

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