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Five Steps of Volcanic Rock

These falls are the record of a series of volcanic eruptions that happened in this area.
Rockies 2.0

But why is it that these layers that were once horizontal are now standing on their heads?
Fossilized Sand Dunes

This is Zion Canyon. Its 2000-foot sandstone cliffs are among the tallest of their kind.
Manhattan Schist

All over the city you can see outcrops of bedrock. It’s called Manhattan schist.
New York's Mountains

Today these steel and concrete giants dominate New York’s skyline.
Tearing North America Apart

A map of the Midwest of the United States shows the distribution of basalt flows.
Dogs' Sense of Time

Dogs' keen sense of smell seems to help them measure the passing of time.
Microneedle

The microneedle could save millions of lives around the world.
GM Plants

Genetically modified plants.
How Solar Cells Work

Go inside a silicon-based solar cell.

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