A groundbreaking research team from Columbia University in the United States has introduced a novel robotic system that boasts remarkable abilities in physical "growth," self-healing, and self-improvement. This innovative technology, dubbed "robotic metabolism," signifies a pivotal advancement toward the establishment of a self-sustaining robotic ecosystem. The achievement, featured in Science Advances, paves the way for exciting new horizons in the future evolution of autonomous machines. During experiments, the robot demonstrated its growth potential by assimilating materials from its surroundings. For instance, a tetrahedral robot enhanced its movement speed by an impressive 66.5% after incorporating additional links.