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<p>Alexandra Witze (<a href="https://bsky.app/profile/alexwitze.bsky.social">@alexwitze.bsky.social</a>) is a science journalist in Boulder, Colorado. In college, she changed her major from chemistry to geology after going on a class field trip in eastern Massachusetts and hiking around rocks all day.</p>


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Eastern North America Is a Geological Hotbed

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Eastern North America Is a Geological Hotbed