UPDATE: Unfortunately, due to scheduling conflicts, the Google+ Hangout with the energy secretary and EPA administrator has been cancelled. We will try to reschedule. Thanks to everyone who left thoughtful questions below in comments; we hope we’ll be able to ask them in the future.

U.S. Secretary of Energy Ernest Moniz and Gina McCarthy, Administrator of the Environmental Protection Agency

Reuters/Heinz-Peter Bader and Joshua RobertsErnest and Gina want to hear from you.

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President Obama laid out his Climate Action Plan in June, and now, with the release of new rules for power plants and other steps, it’s getting rolling.

Energy Secretary Ernest Moniz and EPA Administrator Gina McCarthy — key players in implementing that plan — want to answer your questions about it. Grist will be moderating a White House Google+ Hangout with Moniz and McCarthy on Monday, Sept. 23, at 9:15 a.m. PT / 12:15 p.m. ET.

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Submit your questions ahead of time in the comments below, or via Twitter with the hashtag #ActOnClimate. Then tune in on Monday to watch the live video chat right here at Grist or on the White House Google+ page.