Jonathan Overpeck, a renowned climate scientist and co-director of the Institute of the Environment at the University of Arizona, says of late he’s been reading about Abraham Lincoln.

Specifically about his approach to slavery.

Professor Jonathan Overpeck Compares Climate Change to Slavery, Tweets That Lincoln Would Have Tried to Stop It

Jonathan Overpeck (Credit: Vimeo)

And “Peck” (as his bio indicates he prefers) believes that as Lincoln stepped in to end slavery during the Civil War, Lincoln also would have moved to eradicate climate change, since it’s the “moral issue of our time.”

Here’s how he put it on Twitter:

Professor Jonathan Overpeck Compares Climate Change to Slavery, Tweets That Lincoln Would Have Tried to Stop It

(Credit: Twitter via Weasel Zippers)

The response to Overpeck’s theory was not exactly mixed:

Professor Jonathan Overpeck Compares Climate Change to Slavery, Tweets That Lincoln Would Have Tried to Stop It

(Credit: Twitter)

Here’s Overpeck discussing drought and climate change:

(H/T: Weasel Zippers)