Here are some spots on the planet where humans have really dug in.
A visionary couple and an ever-growing army of volunteers work to return 2 million acres in South America back to nature.
The space agency provides pictures of enigmatic giant shapes that were first spotted in 2007.
The Geological Society of London just released the winners of its '100 Great Geosites' photo contest of geological wonders in the U.K. and Ireland.
The scars left by cataclysms look oddly beautiful from the air.
Smoke from wildfires billows over Crater Lake, Arctic sea ice isn't up to years past and fall colors pop in Siberia.
Some of the oddest sites on our planet are below the surface.
Step right up, folks, and witness the amazing shrinking continent before it's too late.
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