# Deep Time
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deep time is the concept of geological time that spans billions of years, far beyond the scale of human experience. It provides the temporal framework for understanding the formation and evolution of Earth, the development of life, and the slow-moving processes that shape planetary change. First developed as a scientific idea in the 18th century and popularized in the 20th century by writers such as John McPhee, the concept of deep time has influenced fields ranging from geology and evolutionary biology to climate science, philosophy, education, and environmental ethics.
The Music of our Planet: Geology, Sound Art, and Deep Time with Marcia Bjornerud and Olivia Block
Geology is usually taught through rocks, minerals, mountains, and deep time. But structural geologist Marcia Bjornerud and sound artist Olivia Block show how Earth science also connects to sound, music, memory, climate change, architecture, and the way humans understand the planet.
Marcia Bjorner…
Deep Time on the Mississippi: The River's Geologic Origins and Future with Roy Van Arsdale
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How do you tell the story of a river that's tens of millions of years in the making? In Episode 79, I sit down with Dr. Roy Van Arsdale, Professor Emeritus at the University of Memphis, to trace the deep geologic history of the Mississippi River—and it's a more dynamic ride than y…
Tell Story: Tyson Yunkaporta on Deep Time, Creolization, and Education
In this episode of the Getting Smart Podcast, Mason Pashia and Jason Cummins sit down with Tyson Yunkaporta for a thought-provoking conversation on Indigenous knowledge, relational learning, and the role of schools as spaces for dialogue, contradiction, and meaning-making. Together, they explore…
Scotland's Stones monument and the Song of the Ice
Steve Garrett, musician, artist, writer and geo scientist is performing in this year's Fringe: The Song of the Ice at St Mark's Church on 13-15; 18-20; and 26-28 August. We met at the Scotland's Stones monument in Regent Road Garden to talk about Deep Time, creating music from carbon data, how cr…
S5E26: Maps, Vanished Lakes, and Two Desert Squirrels
We think of range maps as static representations of where plants and animals belong. It doesn't often occur to us that maps are just snapshots of a constantly changing world. In the Mojave Desert, two sister species of desert ground squirrel coexist nearly side by side. A field guide's range maps …
Henrik Svensmark: “Cosmic Rays, aerosols, and clouds” #422
Henrik Svensmark discusses how solar activity modulates cosmic rays, which ionize the atmosphere and can help form aerosols that grow into cloud condensation nuclei, potentially altering clouds and Earth’s energy balance. He describes lab experiments showing more aerosols with increased ionization…
(From the archive) Jonathon Keats: Envisioning Deep Time
Today, we’re going back in the Long Now archives for a talk from artist and experimental philosopher Jonathon Keats, originally recorded on Apr 7, 02015. You’ll hear his original pitch for the monumental art project Centuries of the Bristlecone, launched at the Nevada Museum of Art earlier this ye…
Volcanoes, Plate Tectonics, and Deep Time with Dr. Jo
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“Pretty landscapes become spectacular when you know what you’re looking at. I’ve spent my career visiting volcanoes—first drawn by their natural beauty, and then compelled to understand the structure, processes, and time that shape them.”— Dr. Tamie J. Jovanelly
Overview
With over…
Triceratops: What Were the Horns and Frill For?
Few dinosaur skulls are easier to recognize. A beak at the front. Two long brow horns.
Inside this episode:
- Meet The Three-Horned Face
- What A Horn Really Was
- The Feeding Machine
- Defense Against T. Rex
- Horns Against Horns
Sources include the references linked below.
Sources and furthe…
26 Anthony Nanson on oral storytelling and its fundamental connection to ecology
In his home in Stroud, oral storyteller and author Anthony Nanson chats about story and the current polycrises. We hear about the three essential ingredients for narrative story: progression of events in time, characters embodied, the imagery of place. Anthony talks of the vulnerability of storyte…
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