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Grades 9-12

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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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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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Science Bulletin

The Last Wild Horse: The Return of Takhi to Mongolia

This feature depicts the emotional reintroduction of Takhi to their last known home range in Mongolia's Gobi desert. The Takhi, also known as Przewalski's horse, is the last surviving horse species that has never been domesticated. An important national symbol for Mongolians, the Takhi also serves as an important case study for conservation biologists who struggle to support the viability of thousands of species on the verge of extinction.

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Article

Photographing Weddell Seals from Below the Ice

Weddell seals spend about 90% of their time submerged, making them a tricky animal to study. Before Davis developed a special camera, scientists could only speculate about the seals' lives below the ice.

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Article

First Day at Sea and Exploration Vessels

Set sail with a team of teachers and scientists studying deep sea vents off the coast of Washington State. Experience the first day of the exciting trip—the sights, sounds, and seasickness.

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Article, Online Resource

Profile: Harold C. Urey

This Nobel Prize–winning chemist contributed to several scientific fields. His remarkable body of work spanned chemistry, geochemistry, lunar science, and astrochemistry.

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