No matter what, I don't think yelling "shut up" is appropriate, or particularly mature.Because it's ridiculous. A comic book convention is not where you ask about carbon footprints, and a comic book company is not who you ask about carbon footprints. What does he want? Marvel writers carpooling to work? Printers powered by solar panels? Marvel is hardly a huge polluter.
I think a con is the perfect place; it's a good issue to get out there publicly. Also, I think most of the publishing industry probably has a pretty large carbon footprint. The correct answer Buckley should have used is: digital comics!
Anyway...the rest of the panel didn't interest me much. the huge news is the Amazing and Astonishing creative teams, and that didn't show up here, though Favreau/Granov Iron Man sounds cool.