It is also three times more fatal than AIDS, tuberculosis, and malaria combined, one-and-a-half times more lethal than smoking. The researchers also stressed that the 9 million premature deaths in their findings were just a partial estimate of the total number of people killed by pollution exposure.
"In 2015, the greatest numbers of deaths due to pollution occurred in Southeast Asia (3.2 million) and the western Pacific (2.2 million)".
The US is the only developed country in the top 10.
Experts say the huge population of countries like India and China and the fact that these are developing economies should also be kept in mind while analysing these statistics.
Philip Landrigan, dean of global health at the Icahn School of Medicine at Mount Sinai, New York, and the lead author of the report, told HuffPost the study is the first and most comprehensive of its kind.
Further, Landrigan added that in addressing localized emissions on the city and country level, the world as a whole stands to benefit as they're a substantial contributors to global climate change.
Tesla fires hundreds of employees over bad performance
Workers who spoke to The Mercury News estimated that 400 to 700 employees were fired, although Tesla would not give a number. The company has about 450,000 preorders of its Model 3 vehicles, but it only produced 260 Model 3s in the third quarter.
The Lancet editors Pamela Das and Richard Horton said the report came at a "worrisome time, when the U.S. government's Environmental Protection Agency, headed by Scott Pruitt, is undermining established environmental regulations".
But rapidly industrialising nations are worst affected and regulation could help to protect health as they develop, said the commission, which brings together more than 40 worldwide health and environmental authors.
It says air pollution was the main cause of deaths, responsible for 6.5 million of the fatalities, followed by water pollution, which killed 1.8 million.
News agency PTI reported that the online indicators of the pollution monitoring stations in Delhi on Diwali nigh glowed red, indicating a "very poor" air quality as the volume of ultra fine particulates PM2.5 and PM10, which enter the respiratory system and manage to reach the bloodstream, sharply rose from around 7 pm. In countries in the process of rapid industrialization, such as India, Pakistan, China, Madagascar or Kenya, up to one in four deaths could be linked to the pollution.
Pollution, the report said, was also "costly", costing some United States dollars 4.6 trillion in annual losses - or about 6.2 per cent of the global economy.
"Welfare losses due to pollution are estimated to amount to Dollars 4.6 trillion per year: 6.2 per cent of global economic output".
"Pollution-related diseases cause productivity losses that reduce gross domestic product (GDP) in low-income to middle-income countries by up to 2 per cent each year. The costs attributed to pollution-related disease will probably increase as additional associations between pollution and disease are identified", it said.
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