If you have a comment, please submit it here. This form goes to my wonderful assistant Laura, who is able to respond much more quickly to email than I can.

If you have a question on the science – like, how do we know carbon dioxide is a heat-trapping gas? isn’t this warming just a natural cycle? or aren’t there more polar bears today than fifty years ago? – please review Skeptical Science’s helpful answers, to see if they’ve already tackled it. They do a great job.

If you’re wondering whether I could speak to your group, please check out Climate Voices first. It is a free speaker’s bureau featuring over 200 scientists from around the U.S. I know many of them personally and can’t recommend this resource strongly enough, because the value of connecting with a local scientist who lives just down the road from you is … well, priceless!

If you really want me, check my list of events and see if I already have something planned for your area. If not, I’m always open to suggestions. I generally book 12-18 months in advance, but am always open to a carbon-neutral video presentation on shorter notice.