Elon Musk is arguably the world’s biggest clean energy advocate, and his company, Tesla, has built some of the biggest battery storage systems on the planet. Yet in recent comments, Musk has highlighted that he believes it’s a mistake to stigmatize nuclear energy today, especially as renewables like solar and batteries are still ramping up. Apart from leading Tesla into new milestones, Musk is also funding the $100 million XPRiZE Carbon Removal competition. The competition is well on its way, with XPRIZE revealing its 15 ‘milestone round’ winners last April.