David Keith reviews the science and technology of solar geoengineering, addressing the following Q’s: how effective could it be in reducing climate risks? What new risks does it entail? What

David Keith reviews the science and technology of solar geoengineering, addressing the following Q’s: how effective could it be in reducing climate risks? What new risks does it entail? What is uncertain? And, finally, how could uncertainty be reduced to a substantial research program? He presents a case for integrating solar geoengineering into a 4D climate policy that includes emissions cuts, carbon removal, and adaptation.

David Keith has worked near the interface between climate science, energy technology, and public policy since ’91. He took first prize in Canada’s national physics prize exam, won MIT’s prize for excellence in experimental physics, and was one of TIME Magazine’s Heroes of the Environment. David is Professor of Applied Physics at the Harvard School of Engineering and Applied Sciences and Professor of Public Policy at the Harvard Kennedy School, and founder of Carbon Engineering, a Canadian company developing technology to capture CO 2 from ambient air to make carbon-neutral hydrocarbon fuels. Best known for his work on the science, technology, and public policy of solar geoengineering, David led the development of Harvard’s Solar Geoengineering Research Program, a Harvard-wide interfaculty research initiative. His work has ranged from the climatic impacts of large-scale wind power to an early critique of the prospects for hydrogen fuel. David’s hardware engineering work includes the first interferometer for atoms, a high-accuracy infrared spectrometer for NASA’s ER-2, the development of Carbon Engineering’s air contactor and overall process design, and the development of a stratospheric propelled balloon experiment for solar geoengineering. He teaches science and technology policy, climate science, and solar geoengineering. David is the author of over 200 academic publications with a total citation count of over 13,000. He has written for the public in op-eds and A Case for Climate Engineering.

Moderated by Greg Bronevetsky.

#geoengineering #climatescience #solarengineering

Terisa Siagatonu, a queer Samoan spoken word artist, educator,

Terisa Siagatonu, a queer Samoan spoken word artist, educator, and activist from the Bay Area, shares her powerful poem on climate change and climate justice. A UC Santa Cruz graduate, she has performed on stages from Boston’s Cutler Majestic Theatre to the Oakland PRIDE Festival.

Currently, Terisa directs PIER (Pacific Islander Education and Retention) at UCLA. This vital project combats low matriculation rates of Pacific Islander students into higher education by offering tutoring, mentorship, and advising to high school students in Los Angeles.

Her work, rooted in devotion to her Pacific Islander community, empowers youth through spoken word and college access, fostering self-empowerment and sustainable community impact.

David Korten, author of "Agenda for a New Economy," presented at the 39th Trinity Institute National Theological Conference. His address explored "Radical Abundance: A Theology of

David Korten, author of "Agenda for a New Economy," presented at the 39th Trinity Institute National Theological Conference. His address explored "Radical Abundance: A Theology of Sustainability."

Learn more about David Korten at davidkorten.org. His book, "Agenda for a New Economy," can be ordered from Amazon.com.

EARTH DAY 2020 - A Message from Elder Nii Gaani Aki (Leading Earth Man) - Dr. David Courchene of Turtle Lodge, Canada

Mother Earth is giving birth to a new

EARTH DAY 2020 - A Message from Elder Nii Gaani Aki (Leading Earth Man) - Dr. David Courchene of Turtle Lodge, Canada

Mother Earth is giving birth to a new life. 

This excerpt features an interview with Aleut elder Larry Merculieff from the Native

This excerpt features an interview with Aleut elder Larry Merculieff from the Native Perspectives on Sustainability project. Merculieff critiques the term "sustainability," advocating for humanity's inherent intelligence to live in alignment with all creation.

This series, "Native Perspectives on Sustainability," is produced by David Hall of Portland State University.