By John McDevitt

PHILADELPHIA (CBS) – The 31st Annual Clean Air Council 5K Run for Clean Air took place earlier Saturday along Martin Luther King Drive with an Earth Day Festival.

After the 5K, many of the runners joined the Earthfest celebration on the lawn where members of various organizations were providing information about things like recycling, composting, mass transportation and bicycling.

Brian Knowell is a driver for Chariots of Philly – a bike cab. He uses pedal power to cart up to two paying passengers around the city. And why is this form of transportation attractive?

“For the environment, for the clean air and moving towards a more sustainable form of transportation and it’s also really a lot of fun.”

Rosa Michnya was dressed like a recycle bin full of trash. She is a member of the Clean Air Council.

“This is the city’s largest Earth Day Event and has been for some years now and obviously what we are trying to do is create public awareness about the issue as well as get people fit. We are trying to make sure Philadelphia is one of the next great cities and we want a healthy, sustainable city and anything we can do to encourage it.”