Geology Rocks: Oxygen And Rust
Aug 23, 2012•5 min
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Episode description
Ep6: Join Finley as he travels around the world and back in time to explore everything from fossils to volcanoes and even how rocks helped formed our planet! This week we discover how geologists use rust in rocks to determine how much oxygen was in the atmosphere billions of years ago. Plus we find the answers to questions such as ‘why is Mars red?’.
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