> ## Content Index
> Fetch the complete content index at: https://www.cascadepbs.org/llms.txt
> Use this file to discover other available public pages before exploring further.

# What Turned These Ancient Trees to Stone?
- URL: https://www.cascadepbs.org/show/untold-earth/episode/what-turned-these-ancient-trees-to-stone-hiijy1/
- Published: 2025-04-08T18:05:16.000Z
- Updated: 2025-08-22T09:57:57.000Z
- Description: What secrets can we unearth about the future of our planet from this petrified forest in Arizona?
- Author: Cascade PBS Staff
- Tags: Untold Earth, Season 2, Episode 3, #ZZZ_Episode_8b2b9992-a92c-44a1-9bd4-70e908c1d338, #episode, #ZZZ_Show_53bb3bef-6200-4947-a257-d3385486b9a0, #v1.16

Locked within the stones and fossils of Petrified Forest National Park lies a record of life, death, and resilience during one of Earth's most extreme periods of environmental change. What secrets do these fossilized ecosystems reveal about the prehistoric past, and how can they help predict the future of life on Earth?