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A Simple Plan for Supremacy

Only in recent years have marine biologists come to grasp the astonishing abundance of gelatinous animals in the world's waters. Discover how that knowledge is helping them better understand how ocean food webs work.

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How the Jelly Got Its Glow

To truly understand the deep sea, scientists need to turn off the lights on their submersible vehicles. Then they can see the ghostly blue flickers of bioluminescence produced by virtually every organism of the deep.

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Welcome to the Subfamily

Meet "Big Red," a new species of jellyfish that is bulbous, dusky red, and huge, nearly one meter (about three feet) in diameter, with several fleshy arms instead of tentacles, like a balloon with greedy fingers.

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Observing Jellies

Long ago, people studied jellies by peering over the side of a boat and drawing the creatures as they bobbed nearby. See how much has changed since the 1800s.

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Ghosts of Tsunamis Past

By unearthing sediment deposits tsunamis leave behind, scientists can study the waves' origins, extent, and frequency — and identify locations that have the geological apparatus to produce a tsunami, but haven't in written history.

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From Math to Maps

A tsunami hasn't affected the Pacific Northwest coast since 1964, yet bright-blue metal signs warning of them dot coastal streets. Find out why scientists are certain these communities are at risk.

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Fear the Future Tsunami?

Why did Hawaiian officials evacuate Hilo Bay in 1986 after a 7.7 earthquake but call off an evacuation in 2003 after a 7.8 one? The answer is DART. Learn more.

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Article: Lemurs in Madagascar—Now

The ring-tailed lemurs that romp around the research camp at the Beza Mahafaly Special Reserve in southwest Madagascar spend plenty of time behaving badly. The same isn't true for their counterparts in the wild.

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Article: Yellowstone National Park is a Volcano

More than three million visitors step onto this charged volcanic landscape every year. Yet the geologists that monitor it are unconcerned about a large, imminent eruption. Find out why.

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