This story is part of a Grist package examining how President Trump's first 100 days in office have reshaped climate and ...

On a one-day visit, drive the main park road ... and plug dome—can be found in Lassen Volcanic National Park, where they literally bubble and steam.

The national park forms one unit of the North Cascades National Park Service Complex. The two other units—Ross Lake National Recreation Area and Lake Chelan National Recreation Area—contain ...

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"Trace fossils" from millions of years ago have been revived with 3D models.