As Business Insider explains, Musk “has championed the idea of launching nuclear weapons just over Mars’ poles since 2015. He believes it will help warm the planet and make it more hospitable for human life.” As space.com says: “The explosions would vaporize a fair chunk of Mars’ ice caps, liberating enough water vapor and carbon dioxide—both potent greenhouse gases—to warm up the planet substantially, the idea goes.” https://www.space.com/elon-musk-nuke-mars-terraforming.html It’s been projected that it would take more than 10,000 nuclear bombs to carry out the Musk plan. The nuclear bomb explosions would also would render Mars radioactive.