Chris Hayes on set, Feb. 27, 2014.
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Chris Hayes and Bill McKibben talk Earth Week

Updated
By msnbc staff

All In with Chris Hayes, 4/22/14, 8:53 PM ET

Chris Hayes takes your climate questions on Twitter

Join us as Chris Hayes and Bill McKibben take your climate questions on Wednesday, April 22nd at 4:30 pm EST. Use the hashtag “#msnbcgreen” to join in.

It’s Earth Week, which makes it an especially important time to think about climate change, its impact on our environment, and what we can do about it.

As part of Earth week, Chris Hayes, host of All In With Chris Hayes, and Bill McKibben, founder of 350.org, are hosting a conversation about climate change on Twitter this Wednesday, April 23 at 4:30 p.m. Chris and Bill will discuss the Keystone XL pipeline, the dangerous effects of climate change, and the global environmental movement. 

We want to hear from you! To join the conversation, use the hashtag #msnbcgreen on Twitter to ask your questions to Chris and Bill. You can also tweet at their handles, @chrislhayes and @billmckibben. Start submitting questions now by leaving a comment on this post in the msnbc green group. 

As always, we ask that you please be respectful and follow our Community Rules, which you can read in full here. 

Follow the Twitter chat here! 

Learn more about Earth Week here.

Read Bill McKibben’s recent msnbc.com op-eds: Time for climate scientists to go on strike and All talk – little action – on climate change 

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Chris Hayes and Bill McKibben talk Earth Week

Updated