Bill Nye, a prominent science educator, warns that the recent extreme heat waves experienced across the U.S. are indicative of a 'new normal' due to climate change. He emphasizes that without immediate action, temperatures will continue to rise, leading to more severe weather events. The heat dome causing scorching temperatures is expected to subside in some regions but persist in others. Nye highlights the importance of addressing climate change to prevent further escalation of extreme heat and weather conditions.