The Download: climate tech goes public and the AI Hype Index returns

Plus: Illinois just passed what could become America's strongest AI safety law. Climate tech companies are going public. Solar and battery company Solv Energy went public in February, hitting a $6 billion valuation. X-energy, which builds small modular nuclear reactors, followed at $11.5 billion. Then came geothermal company Fervo Energy, reaching a market cap of about $12.4 billion. All three have been IPO success stories.