The TV ‘scientist’ gave a full-throated speech about climate change to the rain-drenched crowd gathered on the National Mall and availed himself to interviews on the topic. One such interview took place on CNN and pitted Nye, who holds a Bachelors of Science in mechanical engineering, against Princeton physicist and Trump administration science adviser William Happer. The interview got heated when Happer began decrying the scientific community for accepting Global Warming alarmism over CO2 levels.