News reports and coverage about Delhi’s toxic air might be making news every few months but the pollution levels across the country are alarming as well. Over 90 per cent of the cities observed pollution levels much higher than the prescribed standards. On one side where most people agree that to curb global warming, governments and various organizations are taking measures to limit emissions of carbon dioxide and other greenhouse gases. On November 4, 2016, 118 nations ratified a voluntary agreement i.e. The Paris Agreement. According to the agreement each country agreed to take measures to combat climate change, keeping the post-industrial global temperature rise below two degrees Celcius. On a personal level, recycling and conservation reduces the amount of carbon dioxide a person is responsible for putting into the atmosphere. Exposure to air pollutants has been linked to suppressed lung growth, asthma, heart disease and diabetes onset. Air pollution from traffic and industry is leading to premature death of more than three million people a year. Globally, that’s more than malaria and HIV/Aids combined. According to Greenpeace reports, 90% of cities observed pollution levels over prescribed standards. The exposure of pregnant women to air pollution has also been found to affect brain growth. Even in countries with a long history of tackling air pollution, the problem has not gone away. Some of the Main pollutants are: Sulphur dioxide: Produced due to burning of fossil fuels. Nitrogen dioxide: Highest levels found close to road traffic.Ozone (ground-level): Caused by chemical reactions between natural, traffic and industrial pollution in strong sunlight.Particulate matter (PM): Solid particles or liquid droplets in the air, primarily from road traffic. When smaller than 2.5 micrometers, they are known as PM2.5. Larger particles, which could be dirt or dust stirred up from vehicles are known as PM10.