4AIR’s latest whitepaper covering 2025 global policy is available here:

2025 Aviation Decarbonization Policy Deep Dive & Outlook — 4AIR

The paper is a comprehensive overview of the key policy developments shaping aviation decarbonization in 2025, with a focus on SAF and emerging state and federal regulations in the US and abroad. 4AIR provides actionable insights for business aviation operators to navigate these changes, ensure compliance, and capitalize on opportunities to lead in sustainability.

https://www.4air.aero