Los Límites de la Habitabilidad

This executive summary from the Global Climate and Health Alliance examines the emerging threat of wildfire smoke and climate change on human health, focusing on case studies from Canada, Australia, and Brazil.

• Wildfires, whether caused by climate change or contributing to it through carbon release, lead to severe air pollution that impacts large populations. In Australia, 80% of the population was affected by smoke pollution from the 2019/2020 fires. Smoke contains pollutants such as particulate matter, carbon dioxide, nitrogen oxides, and volatile organic compounds, and can contaminate water sources via ash, particles, and chemical fire retardants.
• Exposure to wildfire smoke causes immediate health issues, including coughing, breathing difficulties, and the triggering of asthma, leading to increased emergency room visits, particularly among children. It is also linked to emergency calls for cardiovascular and diabetic problems. Long-term risks include adverse pregnancy outcomes such as low birth weight, and specific research in British Columbia showed respiratory and cardiovascular impacts within the first hour of exposure to PM2.5 particles.
• Vulnerable groups are disproportionately affected by smoke pollution, specifically children, the elderly (those over 65), and individuals with chronic conditions such as asthma, chronic obstructive pulmonary disease (COPD), and cardiovascular diseases. People who spend more time outdoors are also at higher risk.
• Case studies highlight the scale of impact: in Canada's British Columbia and Alberta in 2018, 1.3 million hectares burned, forcing the closure of 19 hospitals and the evacuation of 880 patients at a cost of 2.2 million dollars. In Australia's capital, Canberra, PM2.5 levels reached 2,496 µg/m3 between January 5 and 11, and inhaler prescriptions rose by 73%. In the Amazon basin, approximately 10 million of the 27 million residents live in areas with poor air quality, with 2019 fires causing increased respiratory cases in children.
• The document recommends prohibiting man-made burning for land clearing in the Amazon and other regions, improving fire management through collaboration with indigenous forest guardians, and updating evacuation plans. It calls for global climate action aligned with the Paris Agreement to limit warming to 1.5 °C and further research into the long-term health impacts of smoke exposure.

APA

MacGuire, F., & Sergeeva, M. (2021). Los Límites de la Habitabilidad. Global Climate and Health Alliance. https://climateandhealthalliance.org/wp-content/uploads/2022/10/Los-limites-de-la-habitabilidad-Resumen-ejecutivo.pdf

Chicago

MacGuire, Frances, and Milena Sergeeva. Los Límites de la Habitabilidad. Global Climate and Health Alliance, 2021. https://climateandhealthalliance.org/wp-content/uploads/2022/10/Los-limites-de-la-habitabilidad-Resumen-ejecutivo.pdf.

Wikipedia

{{cite report |last1=MacGuire |first1=Frances |last2=Sergeeva |first2=Milena |title=Los Límites de la Habitabilidad |publisher=Global Climate and Health Alliance |date=2021 |url=https://climateandhealthalliance.org/wp-content/uploads/2022/10/Los-limites-de-la-habitabilidad-Resumen-ejecutivo.pdf |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{macguire2021los, author = {MacGuire, Frances and Sergeeva, Milena}, title = {{Los Límites de la Habitabilidad}}, institution = {Global Climate and Health Alliance}, year = {2021}, url = {https://climateandhealthalliance.org/wp-content/uploads/2022/10/Los-limites-de-la-habitabilidad-Resumen-ejecutivo.pdf}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }