Researchers have discovered that the North American continent is slowly losing rock from its underside in a process called "cratonic dripping." This is caused by the remnants of the Farallon Plate, an ...

"A publication of the Decade of North American Geology." Title on envelope: Centennial continent-ocean transects : Tectonic section displays. Accompanies set of maps, sections and profiles with title: ...

Long considered a disease brought to the Americas by European colonizers, leprosy may actually have a much older history on the American continent. Scientists reveal that a recently identified second ...