Expectations are high for the IPO of SpaceX. The company - which includes rockets, satellites, and AI units - could become one of the most valuable in the world following its market launch on Friday. Founder Elon Musk is set to retail near total control of SpaceX, with 85% of the voting rights. Igor Pejic, Tech Investing Strategist and author of the book "Tech Money," says Musk's personal influence is likely to draw in more investors - but the company is overvalued at $1.75 trillion. 

What are the social and environmental costs of the race for critical minerals? Minerals like cobalt, lithium, and nickel are crucial for the development of new technology, including clean energy. But mining and refining them can be hugely polluting and water intensive – with a risk of deforestation, water contamination, and health problems for local communities. Studies suggest that about half of mining projects around the world are on or near indigenous lands.