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Crutzen (1974) and Crutzen and Ehhalt (1977) presented two key papers in Ambio that in Ambioexemplify how science first revealed to humankind the potential for damage to our ozone shield in the Anthropocene. Crutzen's (1974) review is a sweeping summary of the risks to the ozone layer from supersonic aircraft, chlorofluorocarbons, as well as nuclear weapons testing and nuclear war. Crutzen and Ehhalt (1977) described how the nitrous oxide produced from fertilizers could pose another threat to the stability of the stratospheric ozone layer. The two papers are part of a body of influential scientific work that led to the pioneering Montreal Protocol to Protect the Earth's Ozone Layer to phase out production of chlorofluorocarbons (in 1987), as well as national decisions that slowed or stopped production of supersonic planes (in the 1970s). They remain guideposts today for ongoing international negotiations regarding reducing emissions from fertilizer and limiting nuclear testing. [ABSTRACT FROM AUTHOR]

This paper analyzes how the City of Montréal employed tools of urban planning—including a district plan, street redesign, rezoning, selective public consultation, expropriation, policing and surveillance—to spatially banish sex work from its historic district, using the red light symbol as a branding strategy. This coincided with a change in federal law (Bill C-36) and a policy shift to reposition sex workers as passive victims of sex trafficking. Using a case study design, this work explores the state's refusal to recognize the agency of those engaged in embodied socio-economic exchanges and the safety and solidarity possible in public space. In interviews, sex workers described strategies of collective organizing, resistance and protest to hold the city accountable during this process of displacement. We consider how urban planning might support sex work, sex workers and economic autonomy. [ABSTRACT FROM AUTHOR]

Canada’s book trade is fascinating not only because it really consists of two book trades—the Anglophone and the Francophone—but also because it is a site of intense and sustained policy interventions designed to foster greater domestic control. Examining the country’s book policies, Statistics Canada data, trade association membership rosters and trade directories, this paper reveals that Canada’s contemporary book trade is characterized by three features: circa 40 years of government interventions in response to foreign dominance; the central role of foreign firms despite these interventions; and the dominance of Toronto and Montreal as domestic sites of book production. [ABSTRACT FROM AUTHOR]

Objective: To quantify food/beverage advertising on television in Montreal (Quebec), to estimate and characterise children's exposure and to examine trends over time.Design: Television food advertising data were licensed for nineteen food categories and eighteen stations for May 2011, 2016 and 2019. The frequency of advertisements and the average number viewed per child aged 2-11 years overall, by food category and by station type (i.e. youth-appealing (n 3) and generalist (n 15) stations) were determined. The percent change in advertising frequency and exposure between May 2011 and 2019 was calculated.Setting: Montreal, Quebec, Canada.Participants: This study used media data and did not directly involve human participants.Results: The total number of television advertisements increased by 11 % between May 2011 (n 41 084) and May 2019 (n 45 406); however, exposure to food/beverage advertisements decreased by 53 %, going from 226 ads/child in May 2011 to 107 ads/child in May 2019. Overall, the most advertised food categories in both May 2011 and 2019 were fast food (29·8 % and 39·2 %, respectively) followed by chocolate (14·2 %) in 2011 and savory snacks (9·7 %) in 2019. In May 2019, children were predominantly exposed to unhealthy food categories such as fast food (41·3 % of exposure), savory snacks (7·5 %), chocolate (5·0 %) and regular soft drinks (4·5 %), and most (89·3 %) of their total exposure occurred on generalist television stations.Conclusion: Despite Quebec's restrictions on commercial advertising directed to children under 13 years, Quebecois children are still frequently exposed to unhealthy food advertising on television. Government should tighten restrictions to protect children from this exposure. [ABSTRACT FROM AUTHOR]

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