For Weyerhaeuser, the other important news was an update on its partnership with one of Warren Buffett's biggest recent bets. Weyerhaeuser has a partnership with Occidental Petroleum NYSE: OXY to capture and sequester carbon dioxide (CO2) gas. Weyerhaeuser has agreed to lease 30,000 acres of underground space below its forest to store CO2. Occidental recently announced a 25-year agreement with CF Industries and other partners to store 2.3 million tons a year of CO2 under Weyerhaeuser's forest. The facility that CF Industries is building won't be operational until 2029. However, once it is, Weyerhaeuser will have a long-term source of revenue that will cost the company relatively little. Weyerhaeuser will still continue to grow and harvest timber above the land. This agreement now lets Weyerhaeuser generate revenue from the underground area that it wasn't making any money from before.