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Grades 9-12



Biodiversity in the Crossfire

See how scientists are racing to reveal Vietnam's biological riches before many species and their habitats disappear from the country's landscape due to expanding development and human activity.



Article: The Wild Horse Returns to Mongolia

Takhi horses became extinct in the wild in the late 1960s — but since 1997 they have been successfully breeding in the wild. Learn about the efforts behind this successful reintroduction. 


The Sorry Story of Georges Bank

Find out why this huge shoal between Massachusetts' Cape Cod and Nova Scotia's Cape Sable Island is one of the world's most important fishing resources — and why it's now at risk.



Article: The Horse in Mongolian Culture

Take a look at Mongolia's takhi and discover how an Asian empire was won on horseback — and how Mongolia came to be known as the land of the horse. 



Science Stays Alert, Part I: Birds Under Scrutiny

In a handful of cases, humans have contracted H5N1 from birds and then passed the virus to other humans. Even so, doctors and scientists are taking great pains to prepare for the possibility of such a pandemic.



The Enigma of High Energy Cosmic Rays

In 1912, Viktor Hess took to the sky in a hot-air balloon and discovered a radioactive energy now called “cosmic rays.” Travel to Argentina to see how scientists now hope to discover at long last where the highest-energy cosmic rays are coming from.


Curriculum Collection

For Educators: The World's Largest Dinosaurs

For 140 million years giant dinosaurs called sauropods roamed Earth. Help students investigate the success of the largest land animals ever with this practical and printable exhibition guide for educators.



Article: Sloan Sweeps the Sky

Mapping one-quarter of the heavens in three dimensions — that’s the ambitious mission for the Sloan telescope at the Apache Point Observatory in the Sacramento Mountains of New Mexico. Find out what astronomers have discovered so far.


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