Extras
Can new scientific research help unravel the mystery of Cahokia's disappearance?
Sea otters play a vital role in maintaining the balance of sensitive kelp forests.
These secret islands of the Everglades might be the key to saving it.
The Bonneville Salt Flats took millions of years to form. We altered it in a century.
In Chicago a new resident has upended our thinking about cities and the natural world.
Why do dunes sing? Head into the mysterious world of sand with host Joe Hanson!
Mt. St. Helens Volcano is the site of the world’s newest glacier, one of the few growing.
Every spring, the beaches of Delaware Bay play host to one of the world’s wildest parties.
Learn what’s happening to your body on a coaster and how they might help you feel better.
US streets are designed to move cars as fast as possible. Is it time for that to change?
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The Caribbean town of Plymouth lies frozen in the ash of a devastating volcano.
Meet the axolotl, Mexico City’s endangered, smiling salamander.
North Carolina’s Outer Banks may be one of the most dangerous coastlines in the world.
Florida's once endangered crocodiles are making a very unlikely comeback!
Scientists find the exact time of a massive quake using trees, soil and human records.
Can new scientific research help unravel the mystery of Cahokia's disappearance?
What happened to the once lush, now desert-like Colorado River Delta?
How is this groundbreaking experiment in Ecuador helping deforested rainforests recover?
Sea otters play a vital role in maintaining the balance of sensitive kelp forests.
Exploring LIDAR: Tech using lasers to reveal the deep history beneath our world’s surface.