Major archaeological excavations have been conducted at Scott's 1910–13 expedition hut site on Cape Evans, Ross Island, Ross Dependency, Antarctica over the past three years. The work has involved experimentation and the use of a wide range of equipment for excavating in ice and permafrosted ground and to deal with specific problems encountered during archaeological fieldwork in a frozen environment such as Antarctica. The equipment, its operations, and advantages and disadvantages are described.

Northern Canada and Alaska from 1945 to 1951 had only a minor military presence and no radar surveillance of airborne threats. Fear of nuclear attack from the USSR led to the installation of numerous radar stations between 1951 and 1958. Alaska gained an inner and an outer arc of radar stations, and Canada the Pinetree Line, Mid-Canada Line, Distant Early Warning (DEW) Line and the little-known Pine-Gap radars of the east coast, from Newfoundland to Baffin Island. The Mid-Canada line closed in 1965 and the Pine-Gap stations were dismantled nine years later. The Pinetree and DEW lines ceased operation in 1988. Alaskan radar facilities were upgraded in the mid- 1980s, and in 1987 and 1988 similar radars were installed at the 14 stations of the North Warning Line, built along the abandoned DEW and Pine-Gap lines from northwestern Alaska to southern Labrador. Very long-range over-the-horizon radars at three locations will be completed by the early 1990s to monitor aircraft in the vicinity of Alaska and the east and west coasts of Canada. The ballistic missile early warning radars installed in the early 1960s in Alaska and Greenland received major improvements in the late 1980s.

After landing the Ross Sea shore party of Shackleton's Imperial Trans-Antarctic Expedition at Cape Evans, McMurdo Sound, SY Aurora drifted for 313 days between May 1915 and March 1916 in the pack iceof the Ross Sea and Southern Ocean. During the drift A. H. Ninnis maintained observations of the fauna. He was out hunting on the pack ice on at least 86 days to augment the ship's slender provisions, taking 289 penguins, 10 other sea birds and 20 seals. He sighted whales on at least 15 days, including killer whales in July and August and four large whales, possibly blue whales, in November. He also noted birds returning south for the breeding season in spring, progress of moult in emperor penguins, pupping of crabeater and leopard seals, and food items of several seals and seabirds. Most of his report is presented here, edited to improve its readability and remove abbreviations; the text is preceded by a brief summary of the fauna seen and followed by footnotes on some of his observations.

The Meech Lake Accord constitutional amendment proposal generated extensive debate throughout Canada and the Canadian north. Aboriginal and northern Canadians were particularly vocal in their opposition to the Accord. Northerners were especially offended by the ‘unanimity’ clause, which would have given every province a veto over the creation of new provinces in the north. This paper provides a brief history of the Yukon's constitutional status, and discusses options for future constitutional development, in the context of an impending Yukon Indian land claims settlement and the issues raised by the Meech Lake accord.

Aerial reconnaissance and photography were used in the Ross Sea sector of Antarctica to determine the breeding locations of Adelie penguins Pygoscelis adeliae, and to count the numbers of nests occupied during the early incubation period. From 1981 to 1987, all islands and sea coasts between 158°E and 175°E were searched, and 11 previously unreported breeding rookeries were discovered. Thirty-eight Adé1ie rookeries are now known from the region, with a total of about 1,082,000 breeding pairs — almost half the world population. Some rookeries were photographed in all, or most, of the seven seasons to study the pattern of natural fluctuations in Adelie populations, and comparisons have been made with earlier counts. Populations at nearly all rookeries have increased in size over the last 10–20 years. Possible reasons for this, and for annual fluctuations in numbers breeding, include seasonal variations in. sea ice and weather conditions, and longer-term climatic change.

The results of a monitoring study of three Adelie penguin (Pygoscelis adeliae) rookeries at Cape Bird (77° 13'S, 166°28'E), Antarctica, are presented. Occupied nests were counted immediately after egg laying in most years between 1965 and 1970, and annually from 1974 to 1987. The population has not shown the degree of stability that might be expected of a long-lived species with a low reproductive rate, twice deviating significantly from a mean value of about 37,500 pairs. In the censused rookeries numbers dropped by about 16% in 1967 and a further 30% in 1968. The 1968 decline was attributed to extensive fast ice, but numbers were unaffected in two subsequent years with similar ice conditions. After eight years of relative stability around the pre-1967 level, a period of rapid growth began in 1982 and 1983. The total of 54,000 pairs in 1987, the last year for which numbers are available, was the highest ever counted at Cape Bird. These results stress the need for caution when using bird populations to detect man-induced changes in the marine environment.

Five phases of international involvement in the Arctic are identified. The importance of analyzing internationalization development as a continuous process, instead of as separate periods replacing each other, is set into focus. Core problems of attaining autonomy in the Arctic are identified and related to southern-based strategies. Sustainable development, here analyzed, requires an identity to be developed among people as well as an integrated economy. Lack of identity and persistence of a non-integrated economy are often characteristic of Arctic areas. Greenland's development, analyzed within this theoretical framework. is hampered by a non-integrated economy, which must be changed soon if sustainable development is to be realized by the end of the century.