Let me start with a confession. I spent years flying over enemy territory in an OV-10 Bronco, alone, as all FACs do, dodging anti-aircraft fire, and thinking about survival in very immediate terms. Fuel was fuel. You took what was in the tanks, watched your Bingo number like a hawk, and hoped it was enough to get you home. I never once asked, “Where does this stuff come from?” or “What happens when it runs out?”

I was young. I had a job to do. I didn’t have the luxury of thinking long-term.

But now? Now I think about fuel all the time. Not just jet fuel, all of it. The coal we burn. The natural gas we pipe. The uranium we split in nuclear reactors. And the one fuel that almost nobody talks about, even though it might be the closest thing we have to a miracle.

I’m talking about thorium.

What the Heck Is Thorium?

You’ve probably never heard of it. That’s not your fault. Thorium is a slightly radioactive metal, about as common as lead, and it’s found all over the world: India, Turkey, Brazil, the United States. You could walk past a pile of thorium sand on a beach and never know it.

But here’s the crazy part: thorium can be used as nuclear fuel. And in many ways, it’s better than the uranium we’ve been using for the past 70 years.

Better how? Let me count the ways.

First, thorium is abundant. Way more abundant than uranium. Some estimates say there’s three to four times as much thorium in the Earth’s crust. That means energy security for centuries, even if we ramp up nuclear power dramatically.

Second, thorium reactors are safer. I mean fundamentally, physically safer. You can’t have a Chernobyl or a Fukushima with a well-designed thorium reactor. Why? Because thorium doesn’t sustain a chain reaction on its own. You have to “seed” it with a little bit of fissile material to get it going. If something goes wrong, you just cut the seed source, and the reaction stops. No meltdown. No evacuation zone. No glowing red headlines.

Third, thorium produces way less long-lived radioactive waste. The waste from a traditional uranium reactor stays dangerous for hundreds of thousands of years. Thorium waste? About 300 years. That’s still a problem, but it’s a manageable problem. We can build concrete casks that last that long. We can guard them. We don’t have to warn civilizations 10,000 years from now about buried death.

Fourth, thorium is lousy for making bombs. You can’t easily turn thorium into weapons-grade material. That’s a feature, not a bug. It means countries can share thorium technology without worrying about nuclear proliferation.

So if thorium is so great, why are we still burning coal and arguing about uranium? Why isn’t every reactor on Earth running on thorium?

The Cold War Got in the Way

This is where the story gets frustrating. And also a little sad.

In the 1950s and ’60s, scientists at Oak Ridge National Laboratory built a working thorium reactor. It was called the Molten Salt Reactor Experiment. It worked beautifully. It was safe, efficient, and produced very little waste. The lead scientist, Alvin Weinberg, was convinced it was the future of energy.

But there was a problem. The Cold War was in full swing. The United States wanted two things from its nuclear program: electricity and plutonium for bombs. Traditional uranium reactors could produce both. Thorium reactors? They could produce electricity, but not bomb material.

So the government pulled funding. Weinberg was pushed out. And thorium, this incredible, safe, abundant fuel, was shelved. Forgotten. Buried under a mountain of Cold War priorities.

I’ve seen that kind of short-sighted thinking before. In the military, we called it “fighting the last war.” You get so focused on the threat you already know that you miss the bigger threat coming over the horizon. The generals wanted more uranium because uranium made bombs. They weren’t thinking about climate change. They weren’t thinking about meltdowns. They weren’t thinking about waste that would outlast human civilization.

They were thinking about the Soviet Union. And I get that. But we’re not fighting the Cold War anymore. We’re fighting a warming planet. And the weapons we need now aren’t plutonium bombs. They’re clean, safe, abundant energy sources.

Thorium is one of those weapons. And we left it in the shed.

The Good News: Thorium Is Coming Back

Here’s where I get to smile a little. Because thorium isn’t dead. It’s just been sleeping.

China is building a thorium molten salt reactor right now. India, which has huge thorium reserves, has a long-term plan to generate most of its electricity from thorium. Even the United States is starting to invest again. Companies like ThorCon, Flibe Energy, and Terrestrial Energy are developing thorium designs. The Nuclear Regulatory Commission is slowly, painfully, catching up.

So maybe within ten or fifteen years, we’ll see the first commercial thorium reactors come online.

And when they do, what changes? Everything.

Imagine a world where electricity is cheap, clean, and reliable. No coal ash. No gas pipelines leaking methane. No uranium waste that has to be guarded for millennia. No rolling blackouts when the wind doesn’t blow or the sun doesn’t shine. Just safe, steady power, 24 hours a day, 365 days a year.

That’s not a fantasy. That’s engineering. That’s physics. That’s thorium.

But We Have to Act Now

I’m not going to sit here and tell you thorium is a magic bullet. It’s not. We still need solar. We still need wind. We still need efficiency, conservation, and a thousand other solutions. There’s no single answer to climate change.

But thorium is a huge piece of the puzzle that we’ve been ignoring for way too long. And the reason we’ve ignored it isn’t technical. It’s political. It’s bureaucratic. It’s the inertia of an industry that has spent 70 years learning how to split uranium atoms and doesn’t want to learn a new trick.

I flew missions where the difference between life and death was a split-second decision to try something different. To break the pattern. To drop low when everyone else stayed high, except there was no one else. It was just me. To trust my gut instead of the script. To make the call even when headquarters said something else.

We need that same courage right now. We need to stop fighting the last war. We need to look at thorium, really look at it, and ask ourselves: why aren’t we already using this?

The answer is history. And history can be undone.

I won’t see the first thorium-powered city in my lifetime. Probably neither will you, unless you’re much younger than I am. But our children might. And their children definitely will, if we get out of the way and let the engineers do their jobs.

So here’s my challenge to you: learn about thorium. Talk about it. Ask your politicians why we’re not funding more research. Because the fuel is sitting in the ground, waiting. The science is done. The only thing missing is the will.

And trust me, I’ve seen what happens when we have the will. I’ve seen what happens when we decide to survive. When we go through the schools, do the training, make the call, and pull those 4 Gs all the way home.

We can do this. We just have to remember what we forgot.

Robert E. Barr is a former Forward Air Controller, defense analyst, and author of books on survival, geology, and climate change, including “Will We Survive?” and “Earth’s Gifts from the Past.”