Pollution is the introduction of contaminants into the natural environment that cause adverse change. Pollution can take the form of any substance or energy. Pollutants, the components of pollution, can be either foreign substances/energies or naturally occurring contaminants.
Smog, or smoke fog, is a type of intense air pollution. The word "smog" was coined in the early 20th century, and is a portmanteau of the words smoke and fog to refer to smoky fog due to its opacity, and odor. The word was then intended to refer to what was sometimes known as pea soup fog, a familiar and serious problem in London from the 19th century to the mid-20th century, where it was commonly known as a London particular or London fog. This kind of visible air pollution is composed of nitrogen oxides, sulfur oxide, ozone, smoke and other particulates. Man-made smog is derived from coal combustion emissions, vehicular emissions, industrial emissions, forest and agricultural fires and photochemical reactions of these emissions.
Environmental issues in Pakistan include air pollution, water pollution, noise pollution, climate change, pesticide misuse, soil erosion, natural disasters, desertification and flooding. According to the 2020 edition of the environmental performance index (EPI) ranking released by Yale Center for Environmental Law & Policy, Pakistan ranks 142 with an EPI score of 33.1, an increase of 6.1 over a 10-year period. It ranked 180 in terms of air quality. The climatic changes and global warming are the most alarming issues risking millions of lives across the country. The major reasons of these environmental issues are carbon emissions, population explosion, and deforestation.
Bhiwadi is a planned city in Khairthal district of the Indian state of Rajasthan. It is located 85 km away from the city of Alwar and situated on the Rajasthan-Haryana border. Bhiwadi is considered to be a hub for Taiwanese and Japanese companies. The city is divided into three separate zones, which are the residential, industrial and commercial zones. In recent years, it also became one of the most polluted cities in the world in terms of air pollution.
Air pollution is the contamination of air due to the presence of substances in the atmosphere that are harmful to the health of humans and other living beings, or cause damage to the climate or to materials. It is also the contamination of indoor or outdoor surrounding either by chemical activities, physical or biological agents that alters the natural features of the atmosphere. There are many different types of air pollutants, such as gases, particulates, and biological molecules. Air pollution can cause diseases, allergies, and even death to humans; it can also cause harm to other living organisms such as animals and crops, and may damage the natural environment or built environment. Air pollution can be caused by both human activities and natural phenomena.
There are multiple environmental issues in India. Air pollution, water pollution, garbage, domestically prohibited goods and pollution of the natural environment are all challenges for India. Nature is also causing some drastic effects on India. The situation was worse between 1947 through 1995. According to data collected and environmental assessments studied by World Bank experts, between 1995 through 2010, India has made some of the fastest progress in addressing its environmental issues and improving its environmental quality in the world. However, Pollution still remains a major challenge and opportunity for the country.
Road space rationing, also known as alternate-day travel, driving restriction and no-drive days, is a travel demand management strategy aimed to reduce the negative externalities generated by urban air pollution or peak urban travel demand in excess of available supply or road capacity, through artificially restricting demand by rationing the scarce common good road capacity, especially during the peak periods or during peak pollution events. This objective is achieved by restricting traffic access into an urban cordon area, city center (CBD), or district based upon the last digits of the license number on pre-established days and during certain periods, usually, the peak hours.
Air pollution is the introduction of chemicals, particulate matter, or biological materials into the atmosphere, causing harm or discomfort to humans or other living organisms, or damaging ecosystems. Air pollution can cause health problems including, but not limited to, infections, behavioral changes, cancer, organ failure, and premature death. These health effects are not equally distributed across the U.S population; there are demographic disparities by race, ethnicity, socioeconomic status, and education. Air pollution can derive from natural sources, or anthropogenic sources. Anthropogenic air pollution has affected the United States since the beginning of the Industrial Revolution.
The Ecopass program was a traffic pollution charge implemented in Milan, Italy, as an urban toll for some motorists traveling within a designated traffic restricted zone or ZTL, corresponding to the central Cerchia dei Bastioni area and encircling around 8.2 km2 (3.2 sq mi). The Ecopass was implemented as a one-year trial program on January 2, 2008, and later extended until December 31, 2009. A public consultation was planned to be conducted early in 2009 to decide if the charge becomes permanent. Subsequently, the current charge-scheme was prolonged until December 31, 2011 and starting from January 16, 2012 a new scheme was introduced, actually converting it from a pollution-charge to a conventional congestion charge.
Environmental problems in Delhi, India, are a threat to the well-being of the city's and area's inhabitants as well as the flora and fauna. Delhi, the ninth-most populated metropolis in the world (second largest if the entire NCR includes especially Faridabad and Gurugram– Haryana, is one of the most heavily polluted cities in India, having for instance one of the country's highest volumes of particulate matter pollution. The air quality index of Delhi is generally Good, Satisfactory and Moderate levels between March and September, and then it drastically deteriorates to Poor, Severe, or Hazardous levels in five months between October and February, due to various factors including stubble burning, burning of effigies during Vijayadashami, bursting of firecrackers burning during Diwali and cold weather. In May 2014 the World Health Organization announced New Delhi as the most polluted city in the world.
Air pollution in India is a serious environmental issue. Of the 30 most polluted cities in the world, 21 were in India in 2019. As per a study based on 2016 data, at least 140 million people in India breathe air that is 10 times or more over the WHO safe limit and 13 of the world's 20 cities with the highest annual levels of air pollution are in India. 51% of the pollution is caused by industrial pollution, 27% by vehicles, 17% by crop burning and 5% by other sources. Air pollution contributes to the premature deaths of 2 million Indians every year. Emissions come from vehicles and industry, whereas in rural areas, much of the pollution stems from biomass burning for cooking and keeping warm. In autumn and spring months, large scale crop residue burning in agriculture fields – a cheaper alternative to mechanical tilling – is a major source of smoke, smog and particulate pollution. India has a low per capita emissions of greenhouse gases but the country as a whole is the third largest greenhouse gas producer after China and the United States. A 2013 study on non-smokers has found that Indians have 30% weaker lung function than Europeans.
In Turkey, air pollution is the most lethal of the nation's environmental issues, with almost everyone across the country exposed to more than World Health Organization guidelines. Over 30,000 people die each year from air pollution-related illnesses; over 8% of the country's deaths. Air pollution is particularly damaging to children's health. Researchers estimate that reducing air pollution to World Health Organization limits would save seven times the number of lives that were lost in traffic accidents in 2017.
Cars affect many people, not just drivers and car passengers. The externalities of automobiles, similarly to other economic externalities, are the measurable difference in costs for other parties to those of the car proprietor, such costs not taken into account when the proprietor opts to drive their car. According to Harvard University, the main externalities of driving are local and global pollution, oil dependence, traffic congestion and traffic collisions; while according to a meta-study conducted by the Delft University these externalities are congestion and scarcity costs, accident costs, air pollution costs, noise costs, climate change costs, costs for nature and landscape, costs for water pollution, costs for soil pollution and costs of energy dependency.
Tehran, the capital city of Iran, suffers from severe air pollution, and it is located near three major fault lines, while being the most populous region of the country. The officials have created financial incentives to encourage around 5 million citizens to leave the city. On December 16, 2019 Tehran had its highest air pollution index of 181.
According to a "Global Driver Satisfaction" survey conducted by the navigation app Waze in 2015, Metro Manila had the "worst traffic on Southeast Asia". Emerson Carlos, MMDA assistant general manager for operation has mentioned that in 2015, motor vehicle registrations in Metro Manila peaked at around 2.5 million.
Environmental issues in North Macedonia include air and water pollution, deforestation, threats to endemic species and climate change. There is substantial degree of pollution in the air, water and land of North Macedonia. According to 2019 estimates, the country is considered to have one of the highest degrees of pollution in Europe.
The pollution in Bhiwadi, according to IQAir, is the most polluted in the world. As of Central Pollution Control Board, It becomes most polluted city during Diwali in India. The pollution level was ranked fourth in 2021. It has the air quality index of 106.2 in 2021 and 228 in 2022. It is also the most polluted city in India whose pollution is more than air pollution in Delhi. The PM 2.5 of this city is twenty times more than the maximum level recommended by the World Health Organization. In November 2022, the air quality index of Bhiwadi is 412.
Peshawar, the capital of Khyber Pakhtunkhwa in Pakistan, is facing a major air pollution problem. The city, once known for its fresh air and colorful flowers, is now burdened by pollution. Rapid urbanization and population growth have led to increased vehicular and industrial activity, worsening air quality. The city’s air quality has been ranked as hazardous, with an Air Quality Index (AQI) of 4441. This level is 500 times more dangerous than the guidelines issued by the World Health Organization (WHO).
Karachi is the largest city in Pakistan and the 12th largest city in the world is facing a significant air pollution problem. The air quality of Karachi has been deteriorating over the years, with pollution levels often exceeding safe limits set by the World Health Organization (WHO).
