Got a question for Bill McKibben?

Environmentalist and author Bill McKibben will be dropping by for an online Q&A with readers at noon today.

To ask a question ahead of time for his consideration, click here.

McKibben, an area native, recently edited "American Earth,'' a collection of American environmental writing, and has written books such "The End of Nature'' and "Deep Economy: The Wealth of Communities and the Durable Future.''

He is among the organizers of a website called 350.org, which is dedicated to reducing the carbon dioxide in the atmosphere to 350 parts per million. Here's more about it.