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Engineered pathway lets carbon be plugged directly into key metabolic pathways. One alternative might be to get plants to take up carbon dioxide more efficiently. Unfortunately, the enzyme that incorporates carbon dioxide into photosynthesis, called RUBISCO, is remarkably inefficient. So, a team of researchers in Taiwan decided to try something new—literally. They put together a set of enzymes that added a new-to-nature biochemical cycle to plants that let it incorporate carbon far more efficiently. The resulting plants grew larger and incorporated more carbon.