90% of world's population breathes badly polluted air: WHO
Geneva, May 2: Nine out of every 10 people on the planet breathe air that contains high levels of pollutants and kills seven million people each year, according to a new World Health Organization (WHO) study released on Wednesday.
The study is an analysis of what the WHO says is the world's most comprehensive database on ambient air pollution. The organisation collected the data from more than 4,300 cities and 108 countries, reports CNN.
People in Asia and Africa face the biggest problems, according to the study.
More than 90 per cent of air pollution-related deaths happen there, but cities in the Americas, Europe and the Eastern Mediterranean also have air pollution levels that are beyond what the WHO considers healthy.
The new WHO data show that US cities on the more polluted side of the list include Los Angeles, Bakersfield and Fresno, California; Indianapolis; and the Elkhart-Goshen area of Indiana.
Peshawar and Rawalpindi in Pakistan, have some of the highest particulate air pollution levels in the database. Varanasi and Kanpur in India; Cairo; and Al Jubail, Saudi Arabia, also show higher levels.
"I'm afraid what is dramatic is that air pollution levels still remain at dangerously high levels in many parts of the world," CNN quoted Maria Neira, director of the WHO's Department of Public Health, Environmental and Social Determinants of Health, as saying.
"No doubt that air pollution represents today not only the biggest environmental risk for health, but I will clearly say that this is a major, major challenge for public health at the moment and probably one of the biggest ones we are contemplating."
Particle pollution, a mix of solid and liquid droplets in the air, can get sucked into and embedded deep in your lungs when you breathe. That can lead to health conditions including asthma, lung cancer, heart disease, stroke and chronic obstructive pulmonary disorder (COPD), according to the study.
These outdoor particulates -- including sulphate, nitrates and black carbon -- are largely created by car and truck traffic, manufacturing, power plants and farming. In total, air pollution caused about 4.2 million deaths in 2016, it added.
"Many of the world's megacities exceed WHO's guideline levels for air quality by more than five times, representing a major risk to people's health," Neira said. This is "a very dramatic problem that we are facing now".
Cleaner air accounts for in cities like like Wenden, Arizona (population 2,882), or Cheyenne, Wyoming (population 64,019).
The Eureka-Arcata-Fortuna area of California; Battlement Mesa, Colorado; Wasilla, Alaska; Gillette, Wyoming; and Kapaa, Hawaii, are all on the cleaner-air list.
One of the bigger US cities with cleaner air is Honolulu, according to the WHO data.
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Regulator DGCA eases flight duty norms for pilots amid IndiGo crisis
Mumbai (PTI): Aviation watchdog DGCA on Friday eased the flight duty norms by allowing substitution of leaves with a weekly rest period amid massive operational disruptions at IndiGo, according to sources.
As per the revised Flight Duty Time Limitations (FDTL) norms, "no leave shall be substituted for weekly rest", which means that weekly rest period and leaves are to be treated separately. The clause was part of efforts to address fatigue issues among the pilots.
Citing IndiGo flight disruptions, sources told PTI that the Directorate General of Civil Aviation (DGCA) has decided to withdraw the provision 'no leave shall be substituted for weekly rest' from the FDTL norms.
ALSO READ: 49 Indigo flights likely to be cancelled from Hyderabad
"In view of the ongoing operational disruptions and representations received from various airlines regarding the need to ensure continuity and stability of operations, it has been considered necessary to review the said provision," DGCA said in a communication dated December 5.
The gaps in planning ahead of the implementation of the revised FDTL, the second phase of which came into force from November 1, have resulted in crew shortage at IndiGo and is one of the key reasons for the current disruptions.
#BREAKING: #DGCA relaxes a clause which debarred airlines to club leaves with weekly rest to mitigate #IndiGo crisis
— Economic Times (@EconomicTimes) December 5, 2025
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