Why the UN’s Climate Language Is Quietly Sabotaging Belief in Science

 

New research reveals how careful phrasing may be feeding scepticism — and derailing climate action.

Have you ever heard a climate report say something like “sea‑level rise is unlikely” or “there is a low probability of extreme events by 2100,” and thought: "So maybe it won’t happen"?

You’re not alone.
And a new psychological study argues that this kind of language from official climate bodies might be doing more harm than good — not by lying about the science, but by eroding public trust in it.

The Surprising Problem: Words Well‑Intended — But Misunderstood

The researchers from University of Essex surveyed over 4,000 people across the UK to test how people interpret risk‑language commonly used by the IPCC. They found that terms like “unlikely” or “low likelihood” — meant to signal uncertainty — often trigger a psychological reaction closer to doubt.

In everyday language, “unlikely” isn’t a neutral statistical descriptor. It’s closer to “not believable.” When people hear it, their minds immediately shift to: “Maybe the experts don’t really know.”

That shift is dangerous. Because while the science behind climate change is broadly consensual, the language describing projections makes it sound shaky — even when it isn’t.

Why This Matters: Mistrust, Misinformation, and Stalled Action

When official science reports begin to sound optional or uncertain, it leaves space for doubt — and worse, for misinformation.

• Many now see climate predictions as “extreme or implausible.”

• Doubt erodes motivation to act — both individually and collectively.

• Climate denialists and misinformation campaigns seize the ambiguity as “evidence.”

In effect: scientific caution becomes a signal of uncertainty.

And when society perceives science as uncertain, it makes climate policy, collective action, and long-term planning far harder.

What the Study Suggests — And What Could Help

The good news: the problem may lie in phrasing — and fixing it might be easier than we think.

According to the study authors, replacing vague, pessimistic qualifiers with clearer, more direct language — like “there is a small chance” or “this risk, though low, could have severe consequences” — significantly increases public confidence in the predictions.

That subtle shift reframes uncertainty not as doubt — but as possibility worth preparing for.

Clear language could help bridge the gap between scientific consensus and public urgency.

A Deeper Crisis: The Erosion of Trust in Institutions

What this reveals isn’t just a communication problem. It's a deeper institutional challenge. As mistrust in experts grows worldwide — partly due to politicization, partly due to information overload — even well‑intentioned reports risk being dismissed.

When a respected body like the UN or IPCC says “unlikely,” many end up hearing “maybe not true.” Over time, repeated exposures to such phrasing erode the perceived reliability of scientific institutions — exactly when trust is needed most.

In a world increasingly shaped by misinformation and polarized media, clarity matters. Words shape perception, and perception drives action.

The Urgent Need: Reframe Risk, Restore Trust

If climate change is going to be confronted effectively, we need more than accurate data.
We need language that captures truth without triggering doubt.

We need phrasing that respects scientific nuance — while not undermining urgency.

We need messages that say:

“This could happen. It might be unlikely. But if it does—everything changes.”

Because the greatest threat to climate action might not be denial —
But doubt born from doubt-provoking language itself.