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This paper attempts to convey a sense of the increasing importance of the population question for the future of Canada and its social geographies. This future will be shaped as much by changes in population processes and living conditions as by economic and political factors. Specifically, four transformations are rippling through the country's social fabric and urban landscapes: slow growth and the demographic transition modifications to family forms and living arrangements; increasing ethnocultural diversity; and the shifting relationships among households, labour markets and the welfare state. There is increasing unevenness of population growth, juxtaposing localized growth and widespread decline, massive social changes, the concentration of immigration and new sources of diversity in metropolitan areas, and fundamental shifts in social attitudes concerning family, work and gender relations. Deepening contrasts in living environments and economic wellbeing flow from these trends, and the varied challenges they pose for private actors, governments and service-providers. Questions relating to the country's future population geographies and social structures are complex, analytically difficult, and politically charged, but are too important to ignore.  相似文献   

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Human-induced changes to global climate have become increasingly difficult to ignore in recent years. As the frequency and severity of extreme weather events increases, the impacts on both natural and human systems are becoming difficult to manage with the current policies. In Canada, one of the most vulnerable regions to climate change is the Arctic, where temperatures are rising at a rate two to three times that of the global average. Warmer seasonal temperatures have led to melting permafrost and increased variability in sea ice conditions, which has contributed to a rise in coastal erosion. The ongoing resilience of Arctic communities will depend heavily on their ability to implement successful long-term adaptation policies. The development and implementation of any action on climate change adaptation should involve collaboration with local stakeholders in order to reflect the views and experience of those living in the Arctic.  相似文献   

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The first attempt at psychosurgeryintentional damage to the intact brain for the relief of mental illness–was undertaken in 1888 by the Swiss psychiatrist Gottlieb Burckhardt. Six chronic schizophrenic patients underwent localized cerebral cortical excisions. Most patients showed improvement and became easier to manage, although one died from the procedure and several had aphasia or seizures. Burckhardt, a learned neuropsychiatrist, presented his results in 1890 and in 1891 published his scientific rationale and detailed clinical outcome in a scholarly paper. Nevertheless his approach had shocked the medical community as reckless and irresponsible. Burckhardt was ridiculed, his academic endeavors ceased and his surgical endeavor largely ignored. Nevertheless he continued practice as a fine psychiatrist and mental hospital director. Burckhardts career and interesting ideas on higher cerebral functions are reviewed and placed in perspective regarding the development of “modern” psychosurgery almost one-half century later.  相似文献   

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