A long-lost slab of Earth’s crust may be pulling away the bottom of the oldest part of North America, scientists say ...

The oldest crust on Earth, known to be unchanging, is actually being altered in real time. The North American continent is ...

Scientific, cultural and legal definitions of continental and oceanic regions ... mapped the world and defined the continents of North America, South America and Australia. The existence of ...

When Maureen Long talks to the public about her work, she likes to ask her audience to close their eyes and think of a landscape with incredible geology. She hears a lot of the same suggestions: ...

This article was originally published with the title “ The Confirmation of Continental Drift ” in Scientific American Magazine Vol. 218 No. 4 (April 1968), p. 52 doi:10.1038 ...

It's difficult to imagine a process more gradual than continental drift ... The Interior Seaway, for example, which once divided North America in half, simply drained away as the Colorado Plateau ...