 At least a dozen cities in the West have broken all-time heat records in the past week. Heat is affecting much of the U.S., and as NPR's Julia Simon reports, scientists see a clear connection to climate change. When Joe Paschal moved to Palm Springs, California about 17 years ago, he'd get a break from the summer heat in the evening and mornings. It would be relatively cool, and you could enjoy it outside. That doesn't exist for us anymore, and that's a huge loss.