The Bering Strait is a sea strait between Cape Dezhnev, Chukotka Autonomous Okrug, the easternmost point (169°43' W) of the Asian continent and Cape Prince of Wales, Alaska, the westernmost point (168°05' W) of the North American continent, with latitude of about 65° 40' north, slightly south of the polar circle. It is one of the biggest of its kind.
The Bering Strait has been the subject of scientific speculation that humans migrated from Asia to the North American continent across a land bridge formed by lower ocean levels in the distant past exposing a ridge beneath the ocean. At periods when the oceans were lower, such as when glaciers locked up vast amounts of water, the exposed ridge would have allowed humans to simply walk from Siberia to Alaska, thus populating North and South America thousands of years ago.
- Beck, Roger B.; Linda Black, Larry S. Krieger, Phillip C. Naylor, Dahia Ibo Shabaka, (1999). World History: Patterns of Interaction. Evanston, IL: McDougal Littell. ISBN 0-395-87274-X.