(no subject)
"These studies have now shown that events as significant as the end of the last Ice Age occurred over only a few years each, and perhaps in single years. Scientists had presumed that such major climatic events were long and gradual processes, occurring over centuries or millennia. If global climatic change can occur practically instantaneously -- if an ice age begins in one year when summer doesn't arrive across the polar and temperate world -- then speculation on the causes of climatic change and on how human societies react must be drastically revised. In the search for the causes of climate change, the betting now seems to be on changes in major deep-ocean currents as the triggering device for sudden shifts in global climate." Robert McGhee, Ancient Peoples of the Arctic
"Sea ice environments, and especially ice-edge environments, are much more productive than the open ocean. The bottom of the ice is an inverted landscape...the spring pack ice that flows down the coasts of Labrador and Newfoundland provides a nursery for vast herds of harp and hooded seals.
The Dorset people seem to have mastered hunting these animals, becoming in their turn an ice-adapted species."
"Sea ice environments, and especially ice-edge environments, are much more productive than the open ocean. The bottom of the ice is an inverted landscape...the spring pack ice that flows down the coasts of Labrador and Newfoundland provides a nursery for vast herds of harp and hooded seals.
The Dorset people seem to have mastered hunting these animals, becoming in their turn an ice-adapted species."