Topic: Invasive Species

Satellites spy invasion of grass

Posted Feb 2, 2007 in download Help
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Scientists at the Pacific Northwest National Laboratory in Washington are using NASA satellite images to track an invasion of cheatgrass.

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Ballast Water

Posted Feb 3, 2007 in download Help
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Large ships like tankers or ocean cruisers carry a threat to Earth’s oceans — crabs, jellyfish, and other marine life that can relocate to unfamiliar shorelines. Aquatic accidental tourists — today on Earth and Sky.

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Biodiversity

Posted Feb 3, 2007 in download Help

Plants and animals adapt to environmental conditions. Today the world is changing at a very rapid clip — so it’s not surprising that the world’s biodiversity is affected. Some thoughts on biodiversity — coming up after on today’s Earth and Sky.

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Blister Rust

Posted Feb 3, 2007 in download Help
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A once-common tree of North American mountain forests is in serious decline. Up next — a scientist talks about conserving whitebark pine trees — on today’s Earth and Sky.

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Celebrated Jumping Frog

Posted Feb 3, 2007 in download Help

In the gold rush days, California had gold in its hills — and millions of native red-legged frogs in pristine wetlands. Both the wetlands and the frogs have declined, but there’s hope. Learn more — today on Earth and Sky.

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