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Environment                  19,000 BC
Africa
Southwest Asia
Egypt
Indus Valley
China
Europe
South America
Mesoamerica
North America
Other

Africa

 

Southwest Asia

 Between about 20,000 and 12,500 BC, glaciers expanded over many areas of American and Eurasia, altering climates around the world. Within this span there were shorter cycles of climate change, periods of several thousand years in which the climates became relatively warmer or cooler, drier or wetter. For most of this period, the sea coasts expanded as ocean levels fell. Forests covered coastal areas around the northern and eastern Mediterranean but many higher areas of southwest Asia were dry steppe or grasslands.(26)

Egypt

 

Indus Valley

 

China

 

Europe

 Between about 30,000 and 10,000 years ago, European climates began a long cooling trend with some periods of extreme cold, but for most of the period the summers were cool and the winters relatively mild. The rich European grasslands and mixed forest habitats supported great numbers of herbivores, including reindeer, deer, bison, wild ox, ibex, woolly rhinoceros, and mammoths. France seems to have been densely occupied during this period, particularly near the confluence of the Dordogne and Vezere rivers. This lovely part of the world is a well-watered, heavily forested limestone formation, honeycombed with caves and rock shelters, which offered excellent places to live.(24)

One of the most amply documented Upper Paleolithic cultures in eastern Europe is the Kostenski-Bershevo culture centered in the Don River Valley, about 470 kilometers southeast of Moscow. About 25,000 to 11,000 years ago, the Kostenski-Bershevo area was an open grassland environment, with no rock shelters, caves, or other natural habitations, and with very little wood available for fires. People here left a variety of archeological sites.(24)

South America

 Ironically, the site with perhaps the best claim to a pre-12,000 BP date date in the Americas is among the farthest south, Monte Verde, in south central Chile. Here Tom Dillehay and his crew have excavated a camp site that has been radiocarbon-dated to about 13,000 years ago, and below the levels of that age are layers of tools and debris that may be much older, perhaps up to 33,000 years old.(26)

The Monte Verde dates have recieved some support in the form of radiocarbon dates of hearths from sites near Pedra Furada, in eastern Brazil, where numerous stone tools and animal bones were found with charcoal in stratified layers that yielded a consistent series of twelve dates from about 32,000 to 17,000 years ago.(26)

We have two areas lying at similar distances from their respective poles. In one, the northern, we have many evidences of heavy glaciation, extending over a period of perhaps 40,000 years, but ending about 14,000 years ago, to give way to the present climate about 10,000 years ago. In Chile and Argentina, on the other hand, in the same relative latitude just as close, presumably, to a pole, we have no glaciation until after the climate has become normal for the present temperate zone in the north. It appears that in Argentina a cool period set in just as the hipsithermal phase with higher temperatures set in all over the northern hemisphere! Clearly, then, there was no similarity in climatic trends, but rather the opposite. (132)

Mesoamerica

 

North America

 Today, Eskimos using skin boats easily cross the ninety kilometers of open sea separating Siberia and America, and recently an American woman slathered herself with grease and actually swam from Alaska to Siberia. But such a sea crossing would not have been necessary during much of the Pleistocene. During periods of glacial advance within the last million years, enourmous quantities of water were converted to ice, lowering the sea level sufficiently to expose a 1500- to 3000-kilometer-wide expanse of the floor of the Bering Sea. This land bridge--usually referred to as Beringia--was probably available at least four times in the last 60,000 years.(25)

Prior to 10,000 years ago, species of deer, bison,camels, bears, foxes, mammoths, moose, caribou,and even rodents crossed from Siberia into the New World. Going in the other way--from America to Asia--were foxes, woodchucks, and, during the early Pliestocene, the ancestors of modern forms of horses, wolves, and other animals.(25)

Interior Alaska and Canada were relatively rich environments in the mid-Wisconsin interglacial, and at times humans may have had a narrow but clear ice-free run all the way to South America during this period. Pollen cores from easternmost Beringia suggest that from 30,000 to 14,000 years ago, the time when most archeologists think the first Americans arrived, the "landscape of Beringia consisted of relatively bare polar desert or fell-field tundra, a rocky terrain sparsely vegetated by herbs and dwarf shrubs. This suggests that the late Wisconsin environment in this part of Beringia was as harsh as the modern high Arctic.(25)

Thus we are able to say that warm conditions in the Arctic Archipelago of Canada persisted for the entire duration of the Wisconsin glaciation, from 40,000 years ago down to the establishment of modern conditions. Yes, if the pole were in Hudson Bay, the Arctic should be warm. And the Arctic was warm. However, there is much more evidence. ...the Arctic Ocean was warm during most of the ice age, particularly from about 32,000 to about 18,000 years ago.
Temperate conditions had evidently prevailed in Antarctica in the not distant past. The sediment indicated that no fewer than three times during the Pleistocene Epoch a temperate climate had prevailed in the Ross Sea.(132)

We have two areas lying at similar distances from their respective poles. In one, the northern, we have many evidences of heavy glaciation, extending over a period of perhaps 40,000 years, but ending about 14,000 years ago, to give way to the present climate about 10,000 years ago. In Chile and Argentina, on the other hand, in the same relative latitude just as close, presumably, to a pole, we have no glaciation until after the climate has become normal for the present temperate zone in the north. It appears that in Argentina a cool period set in just as the hipsithermal phase with higher temperatures set in all over the northern hemisphere! Clearly, then, there was no similarity in climatic trends, but rather the opposite. (132)

Other