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December 17, 2021 03:30 am

Fossil Fuel Combustion Kills More Than 1 Million People Every Year, Study Says

An anonymous reader writes: Burning fossil fuels kills more than 1 million people ever year, according to a new study that examined the worldwide health effects of fine particulate pollution, also known as PM2.5. Coal, which produces sooty, particulate-laden pollution, is responsible for half of those deaths, while natural gas and oil are responsible for the other half. Some 80 percent of premature deaths due to fossil fuel combustion takes place in South Asia or East Asia, the report said. Because fine particulate pollution can be so easily inhaled and swept into the bloodstream, it is responsible for a range of diseases, including heart disease, diabetes, COPD, lung cancer, and stroke. More recently, researchers have found links between PM2.5 and other, less obvious diseases like kidney failure and Parkinson's. People who have experienced long-term exposure to PM2.5 are also at greater risk of hospitalization if they fall ill with COVID. The researchers gathered monthly pollution and source data from 1970 to 2017 and ran it through a global air-quality model in conjunction with satellite data. The result was a global map of outdoor PM2.5 with a resolution of about 1 km^2. From there, they estimated the average outdoor exposure for people living in various parts of the world. The study was coordinated by the nonprofit Health Effects Institute, and its coauthors were Randall Martin, a professor of energy, environmental and chemical engineering at Washington University, and Michael Brauer, a professor of population and public health at the University of British Columbia. In regions like South Asia and East Asia and some Eastern and Central European countries, coal causes a majority of the premature deaths that result from fossil fuel combustion. That's due in part to those regions' reliance on coal and because their regulations are typically not as stringent as elsewhere. In regions like North America and Western Europe, which are less reliant on coal, oil and natural gas cause the majority of deaths from fossil fuel-related particulate pollution. Even in the US, a country with relatively stringent clean air laws, fine particulate pollution from fossil fuels is responsible for about 20,000 deaths annually, according to the study.

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