Guest Speakers – Page 2 – Healthy Planet Action Coalition

David Spratt Accelerated Climate Change and the Case for Cooling, June 26, 2025

By HPACAdminpresentation

David Spratt is Research Director for the Breakthrough National Centre for Climate Restoration in Melbourne Australia. He is co-author of Climate Code Red: The case for emergency action which almost 20 years ago proposed emergency-scale mobilization as a necessary response to climate disruption. His work has focused on...

June 26, 2025

Love0

Jeffrey Nielsen – SAI as a Security Dilemma Between the United States and China, June 12, 2025

By HPACAdminpresentation

Major Jeffrey Nielsen is a trained national security strategist with military experience in North America, Europe, West Asia, and East Asia. He researched international climate change security at the US Army's Command and General Staff College before publishing in Oxford Open Climate Change. He will be presenting his...

June 12, 2025

Love0

Greg Rau, The State of Marine Carbon Removals: Ocean Alkalinity Enhancement, HPAC, May 1, 2025

By HPACAdminpresentation

Dr. Greg Rau is a pioneer in applied carbon cycle research, with over 40 years of experience. He is currently Chief Technology Officer and Co-Founder at Planetary Technologies, where he leads the development and scaling of ocean alkalinity enhancement (OAE) as a climate solution. Dr. Rau is also...

May 1, 2025

Love0

David Spratt – Climate Code Red: The Case for Emergency Action, April 20, 2023

By HPACAdminpresentation

David Spratt is an author, Australian climate policy analyst and advocate, and Research Director at the Breakthrough National Centre for Climate Restoration.

April 20, 2025

Love0

Taylor, MacCracken and Simmens – HPAC Townhall, Recent Publications of HPAC Interest, April 17, 2025

By HPACAdminpresentation

Graeme Taylor is a long time active HPAC member and lead author of "A Realistic Climate Strategy" Taylor et al. 2025: https://eartharxiv.org/repository/vie... Michael MacCracken is a retired senior climate scientist and an HPAC Steering Circle Member. Herb Simmens is author of "A Climate Vocabulary of the Future" and...

April 17, 2025

Love0

Mark Jacobson – Solutions for Transitioning to Clean Renewable Energy, April 3, 2025

By HPACAdminpresentation

Conversations with Mark Jacobson: Solutions for Transitioning to Clean Renewable Energy, and Mike MacCracken and Herb Simmens: The Rationale for HPAC Support of Aggressive Mitigation. Mark Jacobson is a Professor of Civil and Environmental Engineering at Stanford University. Mike MacCracken is a retired senior US climate research scientist...

April 3, 2025

Love0

Bruce Parker -The Scenario Explorer, March 20, 2025

By HPACAdminpresentation

Discussion with Bruce Parker, Data Systems Analyst and HPAC member, regarding his "Scenario Explorer", a climate modeling simulator.

March 20, 2025

Love0

The Belem Accord – A Global Pledge by Heads of State to Adopt a New Climate Goal, February 20, 2025

By HPACAdminpresentation

A conversation about The Belem Accord: A Global Pledge by Heads of State to Adopt a New Climate Goal and Plan to Restore a Safe and Healthy Climate for Humanity. Topic of Feb. 20, 2025 HPAC General Meeting.

February 20, 2025

Love0

HPAC Townhall, January 9, 2025

By HPACAdminpresentation

Reports from members on HPAC's activities in 2024 and going forward.

January 9, 2025

Love0

HPAC Roundtable – Rebightening.org, NOAC, Upper Limit Project, HCI, Operaatio Arktis, November 11, 2024

By HPACAdminpresentation

Remarks by leaders of each of the participating organizations followed by open discussion among the organizations and the HPAC membership: Clive Ellsworth of Nature-based Ocean and Atmospheric Cooling (NOAC), Alan Gadian of Rebrighten.org, Rafe Pomerance of Upper Limit Project, Soumitra Das of Healthy Climate Initiative, Viktor Jaakola of...

November 11, 2024

Love0

Pasztor, Parson and Baiman_Direct Climate Cooling or “Geoengineering” Governance, Oct. 2, 2024

By HPACAdminpresentation

Dr Ted Parson, Professor of Environmental Law and Faculty Director of the Emmett Institute on Climate Change and the Environment at the University of California, Los Angeles. He has led and served on multiple advisory committees for the National Academy of Sciences, the U.S. Global Change Research Program,...

October 2, 2024

Love0

Anni Pokela and Viktor Jaakkola -Preserving the Poles and Global Tipping Points, August 22, 2024

By HPACAdminpresentation

Preserving Polar Ice Caps and Preventing Global Tipping Points. A conversation with Anni Pokela and Viktor Jaakkola, leaders of Operaatio Arktis, a Finnish youth climate action group.

August 22, 2024

Love0

GUEST

SPEAKERS

(See a simple list here)

David Spratt Accelerated Climate Change and the Case for Cooling, June 26, 2025

Jeffrey Nielsen – SAI as a Security Dilemma Between the United States and China, June 12, 2025

Greg Rau, The State of Marine Carbon Removals: Ocean Alkalinity Enhancement, HPAC, May 1, 2025

David Spratt – Climate Code Red: The Case for Emergency Action, April 20, 2023

Taylor, MacCracken and Simmens – HPAC Townhall, Recent Publications of HPAC Interest, April 17, 2025

Mark Jacobson – Solutions for Transitioning to Clean Renewable Energy, April 3, 2025

Bruce Parker -The Scenario Explorer, March 20, 2025

The Belem Accord – A Global Pledge by Heads of State to Adopt a New Climate Goal, February 20, 2025

HPAC Townhall, January 9, 2025

HPAC Roundtable – Rebightening.org, NOAC, Upper Limit Project, HCI, Operaatio Arktis, November 11, 2024

Pasztor, Parson and Baiman_Direct Climate Cooling or “Geoengineering” Governance, Oct. 2, 2024

Anni Pokela and Viktor Jaakkola -Preserving the Poles and Global Tipping Points, August 22, 2024

Healthy Planet Action Coalition