Humans have profoundly impacted the planet, ushering in the Anthropocene. Ivo Kennedy explores urban agriculture's vital role in society and individual lives. He investigates how systems, from

Humans have profoundly impacted the planet, ushering in the Anthropocene. Ivo Kennedy explores urban agriculture's vital role in society and individual lives. He investigates how systems, from large-scale hydroponics to community gardens, can reinvent agriculture and foster nature appreciation, even within cities.

Amid environmental crisis, Kennedy, a public health graduate student, reflects on his love for both nature and vibrant city life. He considers how urban agriculture can transform gray skylines into green spaces, helping achieve environmental sustainability in energy-demanding cityscapes. This talk was given at a TEDx event. Learn more at https://www.ted.com/tedx.

The energy transition is critical, with the 2020s marking a decisive decade for climate justice. As fossil fuels peak, we must rapidly scale renewables, ensuring an equitable new energy economy.

The energy transition is critical, with the 2020s marking a decisive decade for climate justice. As fossil fuels peak, we must rapidly scale renewables, ensuring an equitable new energy economy. Visionary "green" entrepreneur Danny Kennedy, founder of New Energy Nexus, proposes a "3D" clean energy future: distributed, decentralized in ownership, and democratized in control, driven by global grassroots entrepreneurship.

Kennedy, a seasoned eco-activist and clean-tech leader, co-founded Sungevity and Powerhouse. He now serves as CEO of New Energy Nexus, a global nonprofit providing funds, accelerators, and networks to advance clean energy innovation and adoption worldwide.

Learn more at bioneers.org.

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