Mars' 2025 Sustainable in a Generation Plan pledges net-zero greenhouse gas emissions by 2050 against a 2015 baseline, investing $2.7 billion from 2023-2025 for reusable packaging, 50% water reduction in high-stress areas, and 100% recyclable U.S. packaging, aligned with UN Sustainable Development Goals and SBTi targets. Progress includes 36% cuts in water gap and renewable energy expansions.