Democrat presidential candidate Joe Biden suggested without evidence that climate change was responsible for the Darfur genocide and for cancer on Wednesday night during a CNN town hall event.

“Look what happened in Darfur,” Biden exclaimed. “What’s Darfur all about? Darfur’s all about the fact that the Sub Saharan desert, cause of the change in climate, no longer had enough arable land.”

Biden continued by claiming that many people have personal experiences with being impacted negatively from climate change, including being diagnosed with cancer.

WATCH:

“Biden attacked Trump on Twitter during his appearance, writing: President Trump continues to: Deny the science in front of his own eyes, Attack the progress made by the Obama-Biden Administration, Spew lies like ‘windmills cause cancer.’ Defeating him is essential to making any progress on climate change. #ClimateTownHall”