Elon Musk reveals key steps to build a self-sustaining Mars city

Elon Musk outlines the requirements for building a self-sustaining Martian city, emphasizing independence from Earth. Key milestones include creating a thriving civilization capable of producing its own resources. Musk anticipates a 20-year timeline and a population of about a million individuals, with SpaceX's Starship playing a crucial role in achieving this vision.