Aviation is running out of runway.
What’s next?
Sustainability in the Air: Volume Two charts the climb from ambition to action in the race for greener skies.
Companies featured in Sustainability in the Air Volume Two
Discover Volume Two
About the book
Aviation is at a crossroads. Climate change is already disrupting flights, while air travel demand keeps soaring. This book is your inside look at how airlines, startups, and policymakers are rewriting the rules of sustainable aviation.
Exclusive insights from leading aviation companies
Real-world case studies, not just theory
A no-nonsense look at aviation’s biggest sustainability hurdles
Lessons from pioneers shaping the future of flight
Key topics
What’s inside?
E-fuels & new propulsion technologies
Can aviation break free from fossil fuels?
Aircraft innovation
From airframes to hydrogen, what’s working now?
Policy & regulation
Who’s setting the rules, and are they working?
Consumer & corporate demand
Will business travel lead or lag in the green transition?
About
The authors
Dirk Singer
Dirk Singer is the Head of Sustainability at SimpliFlying and a recognised voice on climate strategy in aviation. A veteran strategist and founder of award-winning creative agencies, he has spent the past five years focused on sustainable innova- tion across the airline ecosystem. He co- authored the first volume of Sustainability in the Air, which examines how aviation is responding to the climate challenge through technology and systems change. His work—spanning white papers, essays, and a widely read industry newsletter—has shaped how leading airlines, airports, and startups approach net-zero goals.
Shashank Nigam
Shashank is the founder and CEO of SimpliFlying, a global leader in aviation strategy and sustainability. Over the past 18 years, he has advised more than 130 airlines and airports worldwide. His insights have been featured in The New York Times, The Wall Street Journal, and the BBC. His first book, SOAR, became an Amazon bestseller and is part of the curriculum at Cranfield University and Embry-Riddle Aeronautical University. He co- authored the first volume of Sustainability in the Air, now taught at MIT, and hosts the acclaimed podcast of the same name.
Who should read this?
If you’re in aviation, energy, policy, or sustainability, this book is for you
Airline and airport executives
Aerospace innovators
Policymakers & regulators
Sustainability professionals
Investors & analysts
Sustainability in aviation isn’t discussed enough. Capturing it in a book demands rigorous research, precision, and a compelling vision—and this book delivers.
Ashwin Jadhav
VP of Business Development, Twelve
This book is a chance to share what we’ve learnt and support others across the SAF value chain in building successful programmes. We’re proud to be part of the initiative.
Jonathon Counsell
Group Head of Sustainability, IAG
This book translates complex sustainable aviation technologies in a way that engages both industry geeks and curious newcomers — helping expand the conversation.
Diana Birkett Rakow
SVP of Public Affairs & Sustainability, Alaska Airlines
Download the book charts
Where it all began: Volume One
Sustainability in the Air: Volume One introduced readers to a new generation of aviation changemakers—entrepreneurs, airline executives, and policymakers daring to rethink what flight could be. From electric aircraft startups to SAF pioneers, Volume One mapped out the early momentum of an industry in transition.
Praised by aviation professionals and climate experts alike, Volume One became a go-to guide for anyone seeking clarity amidst the noise of greenwashing and blue-sky promises.
