Chestnut Carbon, a nature-based carbon removal startup, has secured $160 million in Series B financing to expand its operations. The company focuses on buying marginal and degraded farmland, planting native trees, and generating carbon credits. These credits are in high demand, especially among tech companies aiming to offset emissions from data centers. The funding round included investments from notable entities like the Canada Pension Plan Investment Board and DBL Partners. Chestnut plans to increase its carbon credit capacity to 100 million metric tons by 2030, requiring significant land transformation. Recently, they sold 7 million carbon credits to Microsoft, aiding in the rehabilitation of 60,000 acres in the southeastern U.S. The company uses Gold Standard certification for its credits, ensuring quality and longevity. Despite the ambitious goals, Chestnut's target represents a small fraction of global emissions, but it highlights the potential of afforestation and reforestation in combating climate change.