Events are planned in cities and towns all around the world to commemorate  the 44^th annual Earth Day. The theme for this year’s earth day is “Green Cities.”

For the first time in history, more than half of the people on earth live in urban areas , according to  Earth Day Network  spokesman Alex Standen, for.  He adds, “a lot of these cities are ripe for improvement. We are really emphasizing different parts of city infrastructure and how they can be transformed to be more sustainable and eco-friendly.”

The most common way to celebrate the day happens this evening at 8:30 when people are asked to turn off their lights for an hour, Here in Toronto prominent landmarks such as the CN Tower will dim their lights.

Around the world there is a conference on green cities in Rwanda, a campaign against poisonous plastic materials in Cameroon, celebrations and workshops in Egypt, tree plantings in China and the launch of a new recycling program in the Bahamas.

You can find out more about Earth Day at http://www.earthday.ca/