The Sun Is Getting Brighter and Nobody Is Talking About It

On a clear afternoon in July, a solar physicist named Peter Foukal sat down with four decades of satellite data and found something that should have made front pages. The sun, according to his analysis, had brightened measurably over the previous three decades. Not dramatically. Not enough to explain global warming on its own. But enough to matter—and enough to complicate a story that climate communicators had already decided was settled. The reaction was instructive. The study wasn't suppressed. It wasn't attacked as denialist propaganda. It was, for the most part, ignored. A few outlets covered it. A few scientists argued about it. Then everyone moved on, because the sun is a terrible villain for a narrative that needs a human face. Here's the uncomfortable truth: solar variability is real, it's measurable, and it's been happening for billions of years. The sun's output fluctuates on eleven-year cycles, on longer cycles, and on timescales we're still trying to understand. During the Maunder Minimum in the 17th century, sunspots nearly vanished, and Europe shivered through a Little Ice Age. That wasn't a fossil fuel problem. That was a star problem. None of this means greenhouse gases aren't warming the planet. They are. The physics is solid, the evidence is overwhelming, and the people who insist the sun is doing all the work are mostly selling books or clicks. But there's a strange allergy in mainstream science communication to admitting that natural forces still matter. The sun is the biggest energy source in the neighborhood. Pretending its fluctuations are irrelevant isn't skepticism—it's a different kind of denial. Who benefits from this silence? Politically, everyone. The left gets a cleaner narrative: humans caused it, humans can fix it. The right gets a convenient strawman: scientists ignore the sun, therefore scientists are untrustworthy. Both sides get to avoid the genuinely difficult question, which is how much of recent warming is solar, how much is atmospheric, and how we'd even know. The sun also has a more practical problem: it's killing people quietly. Not through flares or apocalypse movies, but through heat. 2023 was the hottest year on record, and 2024 is on track to beat it. Heat deaths in Phoenix are rising. Farmworkers in Florida are collapsing in fields. The sun isn't malicious. It's just a giant fusion reactor doing what it's always done, and we've built cities and economies that assume it will never intensify. There's a strange comfort in blaming the sun, because it lets us off the hook. There's a strange danger in ignoring it, because it lets us pretend we understand everything. The truth is probably somewhere in the middle, which is the least viral place to be. So the next time someone tells you the sun is irrelevant to climate, ask them why solar physicists keep publishing papers about it. And the next time someone tells you the sun is the whole story, ask them why the Arctic is melting faster than the Antarctic. Neither answer is simple. That's the point. **Final thought:** The sun is not your friend or your enemy. It's a variable. The sooner we treat it like one—measuring it, arguing about it, funding the research instead of shouting past it—the better equipped we'll be for whatever the next cycle brings. Ignoring the biggest object in the sky isn't science. It's just good branding.