Dave Granlund / PoliticalCartoons.com (click to launch slideshow)

Even though we technically have to wait a few more weeks for Summer to arrive, moving into June means a lot of us will finally give in to the heat and switch on our long-dormant air conditioners. 

A lot of people don't know this, but laughter is scientifically proven to help reduce the heat. So check out our new Summer Heat cartoon slideshow, and you'll cool off in no time!