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Interview: The Fusion Future with Dennis Whyte | Particles of Thought

NOVA PBS Official | October 8, 2026



There is a near-limitless energy source to power our world, and it may be almost here.

Dennis Whyte shares with Hakeem that we’re closer than ever to bottling the power of the sun. He would know. He’s now the CEO of the United Kingdom’s Atomic Energy Authority and a nuclear scientist at MIT. What happens when we finally unlock nuclear fusion, the same energy source that powers the sun? What even is fusion? How does it work, and why are scientists now so close to building commercially viable fusion systems that could put power on the grid? From fusion fundamentals, to the future of energy, to interstellar space travel, Dennis and Hakeem deliver a big conversation on an innovation that could change everything.

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Dennis Whyte is the Hitachi America Professor of Engineering at MIT and former director of the Plasma Science and Fusion Center. He co-founded Commonwealth Fusion Systems, the MIT spinout building a compact fusion reactor using record-breaking superconducting magnets, and is now the CEO of the United Kingdom’s Atomic Energy Authority.

Particles of Thought is hosted by Hakeem Oluseyi, an astrophysicist, author, STEM educator, multi-patented inventor, science journalist, TV personality, science communicator, and inspirational speaker. His research is based on “hacking stars” to understand our universe better and develop innovative new technologies. Oluseyi’s work has resulted in 11 patents and more than 100 publications covering contributions to astrophysics, cosmology, and plasma physics and the development of space missions, observatories, focal plane instruments, detectors, semiconductor manufacturing, and ion propulsion.
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Written by NOVA PBS Official

Comments

This post currently has 17 comments.

  1. @patreekotime4578

    October 8, 2026 at 6:14 pm

    Nah. The whole thing is a ponzi scheme to keep building more fission reactors. And it has the exact same problem as gasoline and fission which is that compared to the high theorhetical energy density, the amount of energy that is actually captured to do work is relatively low. Because like a fission reactor from the 20th century, and a coal-fired plant from the 19th century, it is just a very expensive steam generator. Steam is not the future. And let's not even get into how much energy is required to START the damn things. Or the cost of manufacturing the components of the most expensive power generation method ever dreampt up. Meanwhile, quiety in the background, and despite the widespread FUD written by the oil and gas and nuclear industries, the cheapest power generation methods: solar and wind are ACTUALLY transforming the world. But I guess that story isnt sexy enough. People seem to just want to be scammed at this point, and this show seems happy to give a platform to all the big money scammers.

  2. @limabravo6065

    October 8, 2026 at 6:14 pm

    Ok gents nobody is confused over whether or not nuclear fusion is more power dense a process than is setting gasoline on fire.
    And until you big brains figure out how to stop a few spare quadrillion neutron from turning the walls of your reactor into brittle, highly radioactive waste that needs replacement every 6 weeks (in an operating fusion reactor) then fusion will always be just out of reach.
    Meanwhile we have enough fission fuel to power the united states through to the year 2800 or thereabouts but sure lets circle jerk about how great fusion power could be while we continue burning coal and nat. Gas.

  3. @mickeybrumfield764

    October 8, 2026 at 6:14 pm

    I'm wondering if we are, in some way, narcissistic or supremacists in assuming that our solar energy is free and at no charge to us. We have thought this way in the past about things and, of course, now realize that was an improper way of seeing things.

  4. @PhokenKuul

    October 8, 2026 at 6:14 pm

    Fusion will be used to heat water, or some liquid, to create a high energy gas, like steam, in order to spin a turbine that spins a magnet inside of coils of wire in order to inductively create current. This is a new source of energy to drive a really old technology.

  5. @Sq7Arno

    October 8, 2026 at 6:14 pm

    When I hear people talking about the marvellous energy density of gasoline – That's when I know they are not worth listening to. Anybody who knows anything worth a damn knows you can only get out a tiny fraction of that energy for useful work. Physics will just not allow anything else in a messy arrangement like a complex mechanical internal combustion engine. So yeah… Pro tip for how not to sound stupid. For next time. Gratis.

  6. @chrisc8156

    October 8, 2026 at 6:14 pm

    😢 It is always 10 years away. A fusion reactor is up in the sky providing free power for all – the sun. Stop wasting money on fusion reactors and invest in solar, wind (also a result of the sun's energy), wave (also the result of the sun's energy), hydro (the sun again) and energy storage.

  7. @RsMahmudStudio01

    October 8, 2026 at 6:14 pm

    English Comment:

    I really liked how you broke down the future of fusion energy, its incredible power density, and Dennis Whyte's fascinating insights into clean energy innovation in this interview.

    I’ve created an alternative professional thumbnail specifically for this video that I’d love to share with you. What would be the easiest way to send it for your review?

  8. @PirateRo333

    October 8, 2026 at 6:14 pm

    I was a little disturbed by the evident hole in the plan, which is an inability to use fusion power directly. We’re still just heating water to drive a dynamo. I think we’re missing a step here. How do we drive electrons to do work directly without going through a conversion step where we lose part of the work to heat loss? Imagine a fusion reactor on Arrakis – what does steps does systems theory need to make this happen?

  9. @AraCarrano

    October 8, 2026 at 6:14 pm

    Did they ever get to predicting when self-sustaining might be achieved? And how much further in the Net Positive direction before economic/energy/fuel refinement ROI?

  10. @electrictoday

    October 8, 2026 at 6:14 pm

    We know that the machinery to produce electricity from heat is much more expensive than photovoltaics (and even batteries). That part is not mysterious.

    Fusion is cool, but electricity production is dominated by basic economics. I hope we learn interesting things from steady progress to control fusion though.

  11. @jasonschriver5949

    October 8, 2026 at 6:14 pm

    Fission took the same path to be a viable energy source. Yes, most of the initial research was for weapons. But the proof of concept was a pile of bricks, hand-stacked around a lump of uranium. And controlling the reaction was adding or removing bricks. A far cry from a fission reactor today.

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