Grafting plants is hard work: It helps reduce stress on plants' roots and create sturdier crops, but it can really stress out farmers. Humans have to struggle to cut plants just the right way and bind them together. That's where a new robot comes in: With the help of steel "hands," it turns plant grafting from tedious art into swift science. Vegetable expert Richard Hassell and his team recently revealed a new robotic system that grafts more quickly and efficiently than a human ever could. They modified a Korean-manufactured robot to grab two plants, precisely slice the upper shoot of one and the root stock of the other, and clamp the two parts together so they can grow into a single plant.