United States

Articles and information related to the geography of the United States

A view across a valley of a dome volcano on a bright sunny day with a blue sky and some clouds.

Largest Dome Volcano in the World

Caitlin Dempsey

Lassen Peak is the world's largest dome volcano with a height of 10,457 feet (3,187 meters).

A view straight up a grove of redwoods.

Fog Sipping Coastal Redwoods

Caitlin Dempsey

The tallest trees in the world, the coastal redwood trees of Northern California, have a remarkable ability to use fog as a source of moisture.

A blackbird feeding nestlings in a nest built on top of a rusty rake. A red wooden wall is in the background and a white downspout helps to support the nest.

Timing Mismatch is Resulting in Fewer Birds

Caitlin Dempsey

A study has found that shifts in the timing of spring seasons, linked to climate change, are impacting bird breeding patterns and leading to less offspring.

A satellite image of a wildfire burning across Oregon.

2023 Wildfires in the Western United States

Caitlin Dempsey

So far in early August of 2023, the wildfire season in the western United States has not been as intense as prior years when a years-long drought was raging.

A Burmese python coiled in the grass in the Everglades.

Florida’s Burmese Python Invasion

Marques Hayes

The introduction of the Burmese Python into Florida has resulted in the decline of many native mammals in the Florida Everglades.