Honoring the Legacy of Our Founding Executive Director
Adam David Sacks, Co-Founder and Executive Director of Biodiversity for a Livable Climate (bio4climate.org) until his retirement in 2023, passed away on February 1st, 2026, at the age of eighty.
We are incredibly grateful to Adam for his vision, fortitude, sacrifice, and indefatigable tenacity.
Read Adam’s Obituary
A Celebration of Life
A Celebration of Life will take place on March 14th, 2026, 2pm.
Friends Meetinghouse at Cambridge
5 Longfellow Park, Cambridge, MA 02138 USA | (617) 876-6883
In keeping with Adam’s values, the family requests that you please don’t send bouquets. In lieu of flowers, consider a donation to Bio4Climate or just buy yourself a fancy chocolate bar, and enjoy it in his honor.




From WGBH
Adam David Sacks, Co-Founder of Biodiversity for a Livable Climate
We were saddened to learn of Adam Sacks’ passing. We met Adam and Paula at a NOFA conference and formed a partnership that led to years of program planning together, bringing talks to our audience grounded in science and offering creative solutions to our climate change crisis. Read Adam’s obituary here. See the talks we co-created on our website.
Tributes
If you would like to add yours, please email adam.tributes@bio4climate.org.
I am so sorry to hear about Adam’s passing. I knew he had been in poor health for a while, but when I think of Adam what pops up in my mind is him striding down the streets of Cambridge, talking animatedly about various ideas and strategies, and me struggling to keep up (with the long strides and the ideas). Adam set things in motion: once he understood the nature-climate connection—once the lightbulb went on, as it did for many of us around the same time—he was unstoppable. He quickly saw the potential for paradigm-shifting conferences, and went all in, bringing in scientists and innovators from across the globe. Propelling Bio4Climate forward was a true calling, a 24-hour mission. One of the great gifts of his leadership was the invitation for young people to take part and find their voice. Another great gift was the way he always kept me honest: he would make sure that I didn’t get too pessimistic, or too rosy. I will remember him with much fondness and admiration.
Judith D. Schwartz
Brave and creative, funny and brilliant.
Michael Kanter
Dear Family and Friends of Adam,
I just wrote Adam an email this evening to get back in touch with him after having been out of touch for too long.
I worked with him at Bio4Climate between 2017 and 2022. I got busy with other things after 2022, but have been carrying what I learned through Bio4Climate with me, as I will continue to do. I am so grateful to have known and worked with Adam and the whole Bio4Climate team, which enriched my life and my understanding of the world. It was specifically Adam who nudged me along in my biodiversity-focused learning and writing journey that led to my writing Mini-forest Revolution. And it was Adam who connected me to Chelsea Green, which published this book. Adam was a steady and generous mentor to me.
It was just by chance that a few minutes after sending my long overdue email to Adam this evening that I stumbled upon the announcement of his passing.
I take comfort in knowing that Adam’s vision and legacy lives on in the many, many people he brought together.
Hannah Lewis
To Adam’s family and friends,
I became aware of Adam Sacks around 2013 as an articulate thinker who popped up in online forums that I participated in about biology, climate and science. He was an active debater with well-formed opinions and I had to presume he was an excellent typist. Within a couple of years I found myself in some local events and got to know him a little bit, and through a web of connections I found myself working with Biodiversity for a Liveable Climate right around the time it got its name.
Adam’s management style made all the difference in making BLC happen. I still marvel at the chutzpah that was required to ask some of the world’s most important scientists and practitioners to be part of a conference for a new organization with virtually no budget, and to have the confidence that this was really possible. I suppose he was somewhat dictatorial, but because he put trust and confidence in team members we were able to form a cohesive team and achieve amazing things.
I was always in agreement with Adam’s critique of the mainstream climate movement, but he steered the organization to present a much fuller and more proactive vision of what climate activism could be. I think his persistence with that vision had, and still has, a big impact on many people.
Brian Cartwright
I saw the news about Adam today. I’m sad to know of his death. I really appreciated him. He was kind and supportive of me.
Coakee William Wildcat
I’m so sorry to hear of Adam’s passing. He was a brilliant and courageous advocate for ecosystem restoration as a path to human survival. We need many more like him. Every time I saw him, wherever it was, he had arrived by bicycle. I gradually came to think he could traverse the world on that bike! Maybe he did.
Richard Heinberg
My deepest condolences to all of you at bio4climate. I never met Adam but deeply appreciate his work and dedication to the most important work of our time. Immense gratitude and Godspeed Adam. ❤️
Lynn Jones
I am very sorry to learn of Adam’s passing.
I fondly remember taking Adam sailing in Woods Hole while discussing Marine Permaculture a decade ago. He contributed significantly to the movement to regenerate biodiversity as a climate solution, and he will be sorely missed.
Brian von Herzen
I am very sad to hear this news. Sending his family and friends love and prayers.
Julie Arnold
Oh, no! This is very sad news! Rest in peace, Adam….. Your legacy, along with the countless resources you’ve shared, has truly made a difference and will continue to inspire change. Thank you for everything you have started with Jim, Paula, and others. Almost 3 years ago, you were planning to go say goodbye to Jan Lambert, and now I am sure she is there to meet you.
Zuzka Mulkerin




