CHICAGO (CBS) — A bus tour promoting cleaner air made a stop in Chicago today, reports WBBM’s Mike Krauser.

The bus stopped at 63rd and Dorchester at the Apostolic Church of God for the Chicago stop of the “I Will Act on Climate” national bus tour drumming up support for the Obama administration’s climate change agenda.

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EPA administrator Susan Hedman told the crowd it is a moral obligation.

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“Some may still deny overwhelming judgment of science, but none can avoid the devastating impact of raging fires and crippling drought and more powerful storms,” said Hedman.

Dr. Sarah Lovinger with Physicians for Social Responsibility said while the summer has been cooler, we’re experiencing more warm weather in the summer.

“And scientists tell us that air pollution will continue to get worse here in Chicago as climate change becomes a bigger problem. Chicago already has the highest childhood asthma rate in the country,” said Lovinger.

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She said this is our only home and reigning in climate change is vital to our existence.