"noise limits"

#13033838

28 November 2025

Red graffiti reading ''STOP MASS TOURISM'' and ''giu le mani da Firenze'' (hands off Florence) is displayed prominently on the light-colored wall of a building in the city center in Florence, Italy, on November 21, 2025. A purple hammer and sickle symbol is painted beneath the text. The graffiti serves as a form of activism and protest against the negative impacts of overtourism on local residents and the historic city's character.

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#13033839

28 November 2025

Red graffiti reading ''STOP MASS TOURISM'' and ''giu le mani da Firenze'' (hands off Florence) is displayed prominently on the light-colored wall of a building in the city center in Florence, Italy, on November 21, 2025. A purple hammer and sickle symbol is painted beneath the text. The graffiti serves as a form of activism and protest against the negative impacts of overtourism on local residents and the historic city's character.

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#13033840

28 November 2025

Red graffiti reading ''STOP MASS TOURISM'' and ''giu le mani da Firenze'' (hands off Florence) is displayed prominently on the light-colored wall of a building in the city center in Florence, Italy, on November 21, 2025. A purple hammer and sickle symbol is painted beneath the text. The graffiti serves as a form of activism and protest against the negative impacts of overtourism on local residents and the historic city's character.

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#12871970

17 October 2025

A portion of Kathmandu, Nepal, is covered by a thin layer of smog that shrouds the atmosphere of the bowl-shaped Kathmandu Valley on October 17, 2025, with the Air Quality Index measuring above 100. The average readings of Kathmandu's pollution exceed the annual average concentrations of PM2.5 of 5 ug/m3, while 24-hour average exposures should not exceed 15 ug/m3 more than 3-4 days per year, as prescribed by the World Health Organization. PM2.5 refers to particulate matter (solid or liquid droplets) in the air less than 2.5 micrometres in diameter. It is among the most dangerous pollutants that can get past the nose and throat to penetrate the lungs and even the bloodstream. PM2.5 particles are small and are also likely to stay suspended in the air for long, increasing the chances of people inhaling them. According to Nepal's Environmental Protection Agency's air quality index, an air quality reading of 151-200 is considered unhealthy, causing everyone to experience problems and sensitive groups to feel more severe effects. When air quality reaches 201-300, it is considered a very unhealthy level, and health risks increase for everyone in the area. When it crosses 300, it becomes hazardous, meaning that the air is of extremely poor quality and poses serious health risks to everyone.

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#12871975

17 October 2025

A portion of Kathmandu, Nepal, is covered by a thin layer of smog that shrouds the atmosphere of the bowl-shaped Kathmandu Valley on October 17, 2025, with the Air Quality Index measuring above 100. The average readings of Kathmandu's pollution exceed the annual average concentrations of PM2.5 of 5 ug/m3, while 24-hour average exposures should not exceed 15 ug/m3 more than 3-4 days per year, as prescribed by the World Health Organization. PM2.5 refers to particulate matter (solid or liquid droplets) in the air less than 2.5 micrometres in diameter. It is among the most dangerous pollutants that can get past the nose and throat to penetrate the lungs and even the bloodstream. PM2.5 particles are small and are also likely to stay suspended in the air for long, increasing the chances of people inhaling them. According to Nepal's Environmental Protection Agency's air quality index, an air quality reading of 151-200 is considered unhealthy, causing everyone to experience problems and sensitive groups to feel more severe effects. When air quality reaches 201-300, it is considered a very unhealthy level, and health risks increase for everyone in the area. When it crosses 300, it becomes hazardous, meaning that the air is of extremely poor quality and poses serious health risks to everyone.

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#12870962

17 October 2025

An environmental zone (''Umweltzone'') sign is seen along Tegernseer Landstrasse in Munich, Bavaria, Germany, on October 13, 2025. The sign marks an area where only vehicles meeting specific low-emission standards are allowed to drive. Cars, buses, and trams share the busy urban street lined with autumn trees and traffic signage.

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#12617643

5 August 2025

Haze from wildfire smoke is seen in Toronto, Ontario, Canada, on August 03, 2025. Environment Canada issues an air quality warning today as smoke from wildfires burns in the Prairie Provinces. Residents are urged to limit their time spent outdoors and reschedule outdoor sports, activities, and events. Smoke may cause mild irritation to the eyes, nose, and throat, and may lead to headaches or a mild cough as well as wheezing, chest pains, or severe cough.

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#12617644

5 August 2025

Haze from wildfire smoke is seen in Toronto, Ontario, Canada, on August 4, 2025. Environment Canada issues an air quality warning today as smoke from wildfires burns in the Prairie Provinces. Residents are urged to limit their time spent outdoors and reschedule outdoor sports, activities, and events. Smoke may cause mild irritation to the eyes, nose, and throat, and may lead to headaches or a mild cough as well as wheezing, chest pains, or severe cough.

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#12617645

5 August 2025

A woman holds an umbrella to protect against the heat as haze from wildfire smoke blankets the city of Toronto, Ontario, Canada, on August 4, 2025. Environment Canada issues an air quality warning today as smoke from wildfires burns in the Prairie Provinces. Residents are urged to limit their time spent outdoors and reschedule outdoor sports, activities, and events. Smoke may cause mild irritation to the eyes, nose, and throat, and may lead to headaches or a mild cough as well as wheezing, chest pains, or severe cough.

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#12451348

7 June 2025

A man jogs in Toronto, Ontario, Canada, on June 06, 2025. Toronto's air quality ranks among the worst in the world today as smoke from wildfires burning in Manitoba, Saskatchewan, and Alberta drifts into the region. Toronto's air quality is currently the second most polluted major city in the world, according to a ranking by IQAir, a Swiss air quality technology company. This places it below Santiago, Chile, and above Montreal, which is in third place as it also faces wildfire smoke from western provinces. Environment Canada urges residents to limit their time spent outdoors and suggests that people consider reducing or rescheduling outdoor sports, activities, and events. Environment Canada notes that smoke may cause mild irritation to the eyes, nose, and throat, and may lead to headaches or a mild cough, as well as wheezing, chest pains, or severe cough.

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#12451351

7 June 2025

A man rides an electric scooter as haze from wildfire smoke is visible in Toronto, Ontario, Canada, on June 06, 2025. Toronto's air quality ranks among the worst in the world today as smoke from wildfires burning in Manitoba, Saskatchewan, and Alberta drifts into the region. Toronto's air quality is currently the second most polluted major city in the world, according to a ranking by IQAir, a Swiss air quality technology company. This places it below Santiago, Chile, and above Montreal, which ranks third as it also experiences wildfire smoke from western provinces. Environment Canada urges residents to limit their time spent outdoors and suggests that people consider reducing or rescheduling outdoor sports, activities, and events. Environment Canada notes that smoke may cause mild irritation to the eyes, nose, and throat, and may lead to headaches or a mild cough, as well as wheezing, chest pains, or a severe cough.

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#12451319

7 June 2025

A food delivery driver wears a face mask as haze from wildfire smoke is visible in Toronto, Ontario, Canada, on June 06, 2025. Toronto's air quality ranks among the worst in the world today as smoke from wildfires burning in Manitoba, Saskatchewan, and Alberta drifts into the region. Toronto's air quality is currently the second most polluted major city in the world, according to a ranking by IQAir, a Swiss air quality technology company. This places it below Santiago, Chile, and above Montreal, which is in third place as it also faces wildfire smoke from western provinces. Environment Canada urges residents to limit their time spent outdoors and suggests that people consider reducing or rescheduling outdoor sports, activities, and events. Environment Canada notes that smoke may cause mild irritation to the eyes, nose, and throat, and may lead to headaches or a mild cough as well as wheezing, chest pains, or severe cough.

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#12451320

7 June 2025

Haze from wildfire smoke is seen in Toronto, Ontario, Canada, on June 06, 2025. Toronto's air quality ranks among the worst in the world today as smoke from wildfires burning in Manitoba, Saskatchewan, and Alberta drifts into the region. Toronto's air quality is currently the second most polluted major city in the world, according to a ranking by IQAir, a Swiss air quality technology company. This places it below Santiago, Chile, and above Montreal, which is in third place as it also faces wildfire smoke from western provinces. Environment Canada urges residents to limit their time spent outdoors and suggests that people consider reducing or rescheduling outdoor sports, activities, and events. Environment Canada notes that smoke may cause mild irritation to the eyes, nose, and throat, and may lead to headaches or a mild cough as well as wheezing, chest pains, or severe cough.

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#12451322

7 June 2025

Haze from wildfire smoke is seen in Toronto, Ontario, Canada, on June 06, 2025. Toronto's air quality ranks among the worst in the world today as smoke from wildfires burning in Manitoba, Saskatchewan, and Alberta drifts into the region. Toronto's air quality is currently the second most polluted major city in the world, according to a ranking by IQAir, a Swiss air quality technology company. This places it below Santiago, Chile, and above Montreal, which is in third place as it also faces wildfire smoke from western provinces. Environment Canada urges residents to limit their time spent outdoors and suggests that people consider reducing or rescheduling outdoor sports, activities, and events. Environment Canada notes that smoke may cause mild irritation to the eyes, nose, and throat, and may lead to headaches or a mild cough as well as wheezing, chest pains, or severe cough.

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#12451323

7 June 2025

Haze from wildfire smoke is seen in Toronto, Ontario, Canada, on June 06, 2025. Toronto's air quality ranks among the worst in the world today as smoke from wildfires burning in Manitoba, Saskatchewan, and Alberta drifts into the region. Toronto's air quality is currently the second most polluted major city in the world, according to a ranking by IQAir, a Swiss air quality technology company. This places it below Santiago, Chile, and above Montreal, which is in third place as it also faces wildfire smoke from western provinces. Environment Canada urges residents to limit their time spent outdoors and suggests that people consider reducing or rescheduling outdoor sports, activities, and events. Environment Canada notes that smoke may cause mild irritation to the eyes, nose, and throat, and may lead to headaches or a mild cough as well as wheezing, chest pains, or severe cough.

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#12451324

7 June 2025

Haze from wildfire smoke is seen in Toronto, Ontario, Canada, on June 06, 2025. Toronto's air quality ranks among the worst in the world today as smoke from wildfires burning in Manitoba, Saskatchewan, and Alberta drifts into the region. Toronto's air quality is currently the second most polluted major city in the world, according to a ranking by IQAir, a Swiss air quality technology company. This places it below Santiago, Chile, and above Montreal, which is in third place as it also faces wildfire smoke from western provinces. Environment Canada urges residents to limit their time spent outdoors and suggests that people consider reducing or rescheduling outdoor sports, activities, and events. Environment Canada notes that smoke may cause mild irritation to the eyes, nose, and throat, and may lead to headaches or a mild cough as well as wheezing, chest pains, or severe cough.

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