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Seismic Slinky
HANDS-ON
What goes on under the ground during an earthquake? Use a Slinky to model the various seismic waves that make the earth tremble.
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Building for the Big One
ARTICLE
The three most densely populated cities on the planet where seismologists expect major earthquakes are San Francisco, Tokyo, and Istanbul. Find out why the effects in each city will be very different.
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Antarctic Exploration
ARTICLE
The lure of Terra Australis Incognita begins with the Ancient Greeks and ends with modern cruise ships.
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Ice at the Poles
ARTICLE
There's more to polar ice than just frozen water. Learn about the many varieties of ice found at the poles and how and where they form.
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Antarctica: Ice Gallery
INTERACTIVE
Take an animated tour of Antarctica's variety of ice formations, which give it a beauty unrivaled anywhere on Earth.
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Dry Valleys
ARTICLE
The nearly ice-free Dry Valleys are an Antarctic anomaly, and Earth's closest equivalent to Mars.
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Icebergs
ARTICLE
They're a menace to ships, but life thrives in these frozen oases.
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Liquefaction
HANDS-ON
What happens to sandy or fine-grained soils when an earthquake shakes them up? Try this simple activity to find out.
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International Polar Years
ARTICLE
Four times over 100-plus years, major initiatives have brought together scientists from around the globe to collaboratively study the poles.
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McMurdo Station
ARTICLE
"Mac Town," the first stop for many scientists in Antarctica, is the same as any town—only different.
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