Meet Greg Greg lives in a busy city that is filled with smog and air that is polluted by factories.

He has a long commute to work and usually gets stuck in traffic for hours.

The weather is always gloomy, and he is constantly sick.

Greg makes many trips to the doctor because of his poor health, which causes him to miss work.

Greg's bosses unhappy about all the sick leave.

Greg can't afford to lose his job, especially since his health care is expensive.

He realizes his city is making him sick, financially insecure and release dressed.

Many people around the world live like Greg as Mawr, and more people move from rural areas to cities to find work.

This problem will only get worse.

Many city planners air trying to solve this problem by working towards screen cities, green cities or cities designed with thought to environmental impact.

They're planners and inhabitants seem to minimize the output of harmful greenhouse gasses like carbon dioxide and methane into the atmosphere.

They are also careful about their cities, consumption of energy, water and food and try to reduce waste.

There are many ways to make a city greener.

These include energy efficient architecture and good public transportation, as well as reducing the amount of time that people and goods have to travel.

For example, some green cities have urban farming, which is the process of growing and distributing food as well as raising animals in and around the city.

Green cities don't only help the planet remember Greg.

His experience shows that the cities we live and impact our health, happiness, Social security and many other aspects of our lives.

Through green cities, people are fighting back against climate change, bringing communities closer together and building healthier environments.

Green cities aren't built overnight, but we can work towards them by making one improvement at a time.

Where is your community going to start?