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The aviation sector has an emissions problem. Convincing people to fly less won’t cut it: The answer is fundamentally reinventing the fuel itself. In this episode of Future in Bloom, host Steph Speirs sits down with Dr. Staff Sheehan, a computer scientist-turned-chemist and five-time entrepreneur, to unpack sustainable aviation fuels (SAFs).

Staff breaks down what’s blocking cheap, abundant, clean electricity. He shares how this problem led him to co-found his fifth company, a nuclear energy startup called Project Omega. He makes the case that nuclear is the safest, most space-efficient, and most reliable baseload energy source available, and that its bad reputation is largely driven by misinformation and resistance from the fossil fuel industry.

Along the way, Staff and Steph tackle greenwashing in aviation, the ethanol industry as a blueprint for SAF adoption, U.S. vs. EU policy approaches, the geopolitics of energy independence, the air quality crisis near airports, and why fossil fuel incumbents “play dirty” to maintain the status quo.

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Matt Traldi, co-founder of Greenlight America, joins Steph Speirs to unpack the “hidden” political friction points stalling the U.S. energy transition. From the permitting bottleneck to why wind and solar are losing by forfeit in local council rooms, Matt breaks down how the next generation of energy is being held back by zoning laws rather than technology. Learn why showing up to a single Tuesday night hearing can have the same carbon impact as planting 4 million trees, and how Matt’s journey from labor unions and the Obama-era EPA led him to tackle the organizing gap in the clean energy revolution.

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Arvin Ganesan, CEO of Fourth Power, joins Steph Speirs to unpack what’s really happening at the intersection of extreme heat, carbon blocks, and the future of long-duration energy storage. From the “25% demand surge” hitting the U.S. grid to why traditional lithium-ion isn’t enough for our wind and solar future, Arvin breaks down the massive technological friction points holding back the next generation of environmental giants.

Learn why the shift to decentralized power is making the grid more volatile and how a career spanning from the U.S. Senate and Obama-era EPA to Apple led Arvin to solve the “loneliness” of climate tech entrepreneurship.
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❓ Common Questions

What is long-duration energy storage (LDES)? It refers to systems that can store energy for 10+ hours to handle grid fluctuations when the sun isn’t shining.

How does Fourth Power’s technology work? It uses electricity to heat carbon blocks to extreme temperatures, which can then be converted back to power as needed.

Why is grid demand increasing so fast? The primary drivers are the massive energy needs of AI data centers, the transition to Electric Vehicles (EVs), and a resurgence in domestic manufacturing.

What are the biggest challenges for climate tech CEOs? Beyond the tech, it’s about managing investor trust and the emotional toll of leading a “hard tech” revolution.