After reading out some statistics from the deadly Hawaii wildfires, they played a clip from a member of the Young Americans for Freedom, a conservative youth activist organisation, who said climate was the number one issue for young people.
Asked to raise their hand if they thought mankind was to blame, not one went up. And only one candidate said climate change was real in the short discussion that followed.
Florida Governor Ron DeSantis said it was childish to ask for a show of hands and instead laid into Joe Biden for the president’s response to Hawaii.
I just meant that the carbon from ~30 years ago is what is affecting us today. Like others have said we have been theorizing that carbon can cause climate change since a bit into the industrial revolution. Not sure when we “knew” it was real though.