The U.S. and China are in a high-stakes race to develop fusion energy, a potential game-changer for clean, limitless power. China is outspending the U.S. and working around the clock, with far more experts dedicated to the cause. American officials worry that China's rapid advancements might outpace their own efforts, despite the U.S. initially leading the way. As both nations strive to harness the power of the sun through fusion, the outcome of this technological battle could reshape the globa...