Grades 9-12

Species and Sprawl: Yellow Starthistle

Article

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

Article

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.

Science Stays Alert, Part I: Birds Under Scrutiny

Article

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.

Elephants Return to the Forest

Article

Elephants Return to the Forest

Unlike most zoo-raised or domestic species, Asian elephants have never been selectively bred, so they remain genetically wild. See how this helps with forest reintroduction efforts. 

Article: The Wild Horse, Yesterday and Today

Article

Article: The Wild Horse, Yesterday and Today

Modern horses are part of the family Equidae. The fossil history of Equidae is well documented, but new evidence about its evolutionary history — and new interpretations of it — continue to accumulate. 

For Educators: The World's Largest Dinosaurs

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

Article

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.

Interactive

Interactive: A Hotspot Trail

Yellowstone National Park lies above a stationary hotspot deep in Earth's mantle. See how previous volcanic eruptions of the hotspot have left a trail of calderas that ends, at the moment, with Yellowstone.

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