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What is the oldest fossil ever found?
science.howstuffworks.com/environmental/earth/geology/oldest-fossil-ever-found.htm
The oldest fossil ever found could date back to 3 billion years ago. Learn about the oldest fossil ever found in this article.
Can You Identify These National Parks?
play.howstuffworks.com/quiz/can-you-identify-these-national-parks
From Florida's underwater reefs to California's 2,300-year-old forests, celebrate these wild lands by seeing how much you know about some of the biggest and baddest landscapes.
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