Elon Musk's recent interview with Donald Trump, where he discussed climate change and CO2 levels, has sparked significant backlash from environmental experts and fellow billionaires. Musk claimed that the worst effects of high CO2 levels would only cause discomfort, stating that headaches and nausea begin at 1,000 parts per million (ppm). Vinod Khosla criticized Musk's comments as 'dumb,' arguing that focusing on 1,000 ppm ignores the serious risks associated with exceeding 500 ppm, which could lead to catastrophic climate impacts. Climate activist Bill McKibben also condemned Musk's remarks as irresponsible, suggesting he has abdicated responsibility in addressing climate issues. Musk's position appears to contradict his previous acknowledgment of the climate crisis, raising questions about his current stance. This debate highlights the ongoing divide between climate science and public discourse, particularly among influential figures.