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Online Resource

Profile: Lyman Spitzer and the Space Telescope

The idea of launching a telescope into orbit was first suggested in 1923, but the idea wasn't realized until nearly 70 years later. Along the way, there were several obstacles and setbacks.

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Online Resource

Profile: Fritz Zwicky's Extraordinary Vision

Astronomer Fritz Zwicky was the first person to conceive of supernovas, neutron stars, dark matter, and gravitational lenses. So why don't more people know his name?

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Online Resource

Brown-Eyed, Milk-Giving

Which regions of the world have seen the greatest rates of mammal extinction? Surprisingly, it's not the Amazon rain forest nor the clear-cut forests of the U.S. or Africa's Serengeti plain.

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Online Resource

Jaguars

Because they feed on everything from monkeys and pacas to armadillos and alligators, jaguars play a key role in the rain forest ecosystem. Learn how protecting them safeguards the jungles of Belize.

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Online Resource

Wilderness Preservation Act

There are more than 260 distinct ecosystems in the United States. Yet only a little over half of them are in protected wilderness areas. What does it take to obtain "wilderness status"?

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Online Resource

Restoration of the Elwha River

In a single century, the salmon population of Washington State's Elwha River shrunk by more than 99 percent. What caused this dramatic decline, and what can be done to turn it around?

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Online Resource

Lake Victoria

In the world's largest tropical lake, Nile perch have eaten their way through all but one of their prey species, bringing the ecosystem close to death. But don't blame the perch—humans are at fault.

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Online Resource

PROFILE: Penelope Bodry-Sanders

From acting on the Broadway stage to acting on her concerns about habitat destruction in Madagascar, Penelope Bodry-Sanders has had a wide-ranging and active career.

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Online Resource

PROFILE: Kevin Browngoehl

Not long ago, leukemia was a fatal disease. Thanks to treatment that includes a potent drug created from a Madagascar plant, today more than 70 percent of children can be cured.

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