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Grades 9-12

900a

Article

James Hutton: The Founder of Modern Geology

Until the late 18th century, most people believed the Earth was about 6,000 years old. Hutton changed this belief by proposing that geologic forces operate at the same rate today as in the past.

901a

Article

Inge Lehmann: Discoverer of the Earth's Inner Core

Each one of the thousands of earthquakes that occur every year offers a brief glimpse of what's happening deep inside the Earth. Lehmann used seismic signals to change our knowledge of the Earth's core.

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Jesup Revisited

In the past century, how much has life changed in the North Pacific? Explore this question with photographs on display in eight regional museums in the Russian far east.

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Young Naturalist Awards Essay

When Disaster Strikes

An earthquake prediction when she was young peaked the interest of this eighth-grader from Michigan. While the earthquake never occurred, her fascination continues to this day.

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Young Naturalist Awards Essay

My Fish-Shaped Home: A History of Changes

Did you know that Long Island was once part of a chain of volcanoes? Or that it was part of the tropics—and faced south? Step back in time with this seventh-grader for a look at the forces that shaped this giant sandbar.

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Young Naturalist Awards Essay

Mars: Past, Present, Future

In the early 1900s, some astronomers believed that the color contrasts on Mars' surface were great oceans. Today we know they are huge dust storms. Track how our knowledge of Mars has changed with this seventh-grader.

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Article

How to Calculate a Biodiversity Index

One is the riskiest number... A more diverse plant population has a better chance of adapting to changes in the environment. Learn how to quantify the biodiversity of any area.

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