Grades 9-12

Mangrove Threats and Solutions

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Mangrove Threats and Solutions

Straddling land and sea and teeming with life, mangrove forests are key to healthy coastal ecosystems. They're also among the most threatened habitats in the world. Learn more.

Article: When Is "Wild" Actually "Feral"?

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Article: When Is "Wild" Actually "Feral"?

The takhi is the only true wild horse left in the world. The so-called "wild" horses that abound in Australia and North America are actually feral. Find out what it means when a domestic animal becomes feral. 

Article: GRACE Watches Earth's Water

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Article: GRACE Watches Earth's Water

Earth's water is in constant motion. It cycles through the planet's atmosphere, surface, and depths. This water cycle is fundamental to Earth’s climate — and is being dramatically affected by global warming.

Article: Zircons Recast Earth's Earliest Era

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Article: Zircons Recast Earth's Earliest Era

Rocks older than 4 billion years are not available to study, making the first 500 million years of Earth's history particularly mysterious. But cutting-edge techniques are now allowing geologists to study survivors of Earth's early era.

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Diabetes in a Dish: Using Stem Cells to Study Disease

While technological advances are making it easier for the 21 million diabetics in the United States to manage healthy lives, diabetes is still a disease that requires vigilance. See how scientists are using stem cells to find a cure.

Species and Sprawl: Humans

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Species and Sprawl: Humans

Sprawl is affecting Homo sapiens as it does many other species: it alters our habitat, hampers our mobility, and diminishes odds for survival.

Species and Sprawl: Wood Turtles

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Species and Sprawl: Wood Turtles

See how scientists are using radio telemetry to gain a clearer picture of how much and what kind of space wood turtles need to survive.

Species and Sprawl: Yellow Starthistle

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Species and Sprawl: Yellow Starthistle

Seeds can't move by themselves, so they rely on moving things to give them a lift. Discover how cars are taking homespun seed dispersal mechanisms to a new level.

Species and Sprawl: Mountain Lions

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Species and Sprawl: Mountain Lions

What's the animal-friendly antidote to California's urbanization? Some believe the solution is to make the corridors between disparate patches of wild lands truly useable by many different species.

Biogeography Begets Biodiversity

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Biogeography Begets Biodiversity

Discover how the geological and climatic changes that have unfolded over millions of years in Vietnam have set the stage for an extraordinary richness of biodiversity.

Biodiversity in the Crossfire

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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.

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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.

Science Stays Alert, Part I: Birds Under Scrutiny

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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.

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