Actions against climate change have been aggressive since the Paris Climate Change Agreement, and it has been reported that four of the biggest cities in the world would be banning diesel vehicles by 2025. These four include Paris, Mexico, Madrid, and Athens. Experts have claimed that it is one of the actions of major world leaders to improve air quality in their countries.

According to a report from BBC, the countries which would be banning diesel vehicles in the coming years have also expressed their intentions of giving incentives to individuals and organizations that will use alternative vehicles and transport. These "alternatives" may include but are not limited to bicycles and electric transportation.

It would be good to note that these four countries are not the first to officially ban diesel vehicles. For instance, New Delhi has been reported to suffer severe smog late of this year where people have been complaining of difficulty breathing and choking due to intense pollution. Times of India has reported that New Delhi has released an official ban on diesel vehicles which are older than ten years.

It would also be interesting to note that a number of European diesel vehicles are not available locally in the U.S. for the same reason that diesel vehicles can largely contribute to pollution. The Scientific American reported that statistically, the number of diesel vehicles in the U.S. is roughly less than 10 percent.

A number of prevailing diseases right now, especially respiratory illnesses, can be attributed to the growing problem of pollution. With greenhouse gas emissions as one of the largest problems in the world right now, societies all over the world are finding ways to reverse their effects. This will not only to benefit the future generations but also make sure that the people of today will be able to enjoy good air quality in their lifetime.