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The Geology Behind 5 American Landmarks
science.howstuffworks.com/environmental/earth/geology/geology-american-landmarks.htm
The U.S. is full of exceptional geological formations. HowStuffWorks looks at at five that set the bar high as far as landmarks go.
How Seed Banks Work
science.howstuffworks.com/environmental/green-science/seed-bank.htm
Seed banks store our world's seeds, in case disaster wipes out a plant species. Find out how seed banks protect our future.
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