Due to its vast size — stretching from Canada and Greenland in the north, to Mexico in the south — North America contains a ...

Petrified Forest National Park spans around 346 square miles of semi-desert shrub steppe and highly eroded and colorful badlands in northeastern Arizona. The park is a blend of short grass prairie and ...

Shaggy black fur and large size distinguish this animal from all other Adirondack mammals. The black bear has a short, inconspicuous tail. The body and legs are short. The head is broad with erect, ...

Fifty thousand years ago, North America's landscapes were alive with an astonishing array of enormous creatures. Massive woolly mammoths roamed vast icy plains, while dense forests echoed with the ...

Computer models predict that hotter, drier conditions in North America will limit the growth of a fungus that normally curbs the spread of the spongy moth, an invasive species that has caused millions ...

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An ancient hornless rhino fossil found in the Canadian Arctic, Epiaceratherium itjilik, shows rhinos once lived much farther ...

The golden oyster mushroom, a tasty species native to Asia, has proliferated in states around the Great Lakes and may crowd out native species, a new study shows. By Jacey Fortin For a few years, ...

PORTLAND, Ore — Oregon is on its way to creating North America’s largest research forest, following this week's decision by top state officials to separate the Elliott State Forest in southwest Oregon ...