arctic boundary layer expedition
31Siberia — Siberian redirects here. For the cat breed, see Siberian (cat). This article is about Siberia as a whole. For the federal district, see Siberian Federal District. For other uses, see Siberia (disambiguation). Coordinates: 60°0′N 105°0′E / …
32Pacific Ocean — an ocean bordered by the American continents, Asia, and Australia: largest ocean in the world; divided by the equator into the North Pacific and the South Pacific. 70,000,000 sq. mi. (181,300,000 sq. km); greatest known depth, 35,433 ft. (10,800… …
33Aurora (astronomy) — Aurora Borealis redirects here. For other uses, see Aurora Borealis (disambiguation). Aurora Australis redirects here. For the ship, see Aurora Australis (icebreaker). For the book, see Aurora Australis (book). Northern lights redirects here. For …
34Patagonia — For other uses, see Patagonia (disambiguation). Official map of cartographer of the King of Spain, Juan de la Cruz Cano y Olmedilla, 1775. Patagonia is a region located in Argentina and Chile, integrating the southernmost section of the A …
35pre-Columbian civilizations — Introduction the aboriginal American Indian (Mesoamerican Indian) cultures that evolved in Meso America (part of Mexico and Central America) and the Andean region (western South America) prior to Spanish exploration and conquest in the 16th …
36Missouri River — Coordinates: 38°48′49″N 90°07′11″W / 38.81361°N 90.11972°W / 38.81361; 90.11972 …
37Bering Sea and Strait — ▪ sea, Pacific Ocean Introduction Russian Beringovo More and Proliv Beringa, northernmost part of the Pacific Ocean, separating the continents of Asia and North America. To the north the Bering Sea connects with the Arctic Ocean through the …
38Marine pollution — While marine pollution can be obvious, as with the marine debris shown above, it is often the pollutants that cannot be seen that cause most harm. Marine pollution occurs when harmful, or potentially harmful effects, can result from the entry… …
39Clovis culture — …
40History of Yukon — Yukon (formerly the Yukon Territory) is one of Canada s three territories, in the country s extreme northwest. Before European contact Disputed evidence of the oldest remains of human inhabitation in North America have been found in the Yukon. A… …
