Air pollution is an invisible threat that affects the health of people in major cities around the world. According to the World Health Organization (WHO), outdoor air pollution is responsible for over 4.2 million premature deaths each year. Children are particularly vulnerable to the harmful effects of air pollution, which can lead to respiratory diseases like asthma and pneumonia.

In cities like New Delhi, India, the air quality index (AQI) often exceeds 500, which is considered hazardous to human health. The pollution is caused by a variety of factors, including vehicle emissions, industrial activity, and the burning of crops and waste. This has led to a rise in cases of respiratory diseases among children, with pneumonia being one of the most common.

Pneumonia is an infection that affects the lungs, causing inflammation and fluid buildup. It is a leading cause of death among children under the age of five, and air pollution can increase the risk of developing pneumonia by weakening the immune system and damaging the respiratory system.

To address this issue, cities around the world have implemented various measures to reduce air pollution. In London, a congestion charge was introduced to reduce the number of cars on the road, while Beijing has restricted the number of cars allowed on the road each day. In addition, many cities are investing in public transportation, cycling infrastructure, and renewable energy sources.

However, more needs to be done to protect the health of children in major cities around the world. Governments and individuals can play a role in reducing air pollution by using public transportation, carpooling, and reducing their energy consumption. Businesses can also implement green policies to reduce their carbon footprint.