When a Chinese speaker says "玫瑰" and an English speaker says "rose," are they conjuring the same image in their minds? A landmark study from Peking University suggests the answer depends partly on where they were raised—and how hot, wet, or cold that place tends to be.
Led by Professor Bi Yanchao, researchers analyzed word meanings across 53 languages spanning 10 language families, then drilled deeper with behavioral tests from speakers of eight languages and brain imaging data from multilingual participants. Published in Nature Communications, their findings reveal something counterintuitive: while human languages sound and behave differently on the surface, the underlying architecture of meaning—the deep structure that organizes how we conceptualize the world—appears to be shared across all languages, wired into our brains by millions of years of evolution. Yet how languages actually use this universal framework shifts with climate.
The team mapped 1,016 concepts onto 13 biologically grounded dimensions: sensory features like color, shape, taste, smell, sound and touch; body movement; and cognitive features like time, space, quantity, mental states, emotion and social experience. This brain-inspired model predicted semantic patterns better than existing alternatives across the 53 languages studied and even predicted word relationships in a colexification network spanning 2,681 languages.
The breakthrough came when researchers asked why languages still differ if they share this common neural blueprint. They tested four candidates: climate, geography, linguistic history and culture. Climate emerged as the strongest independent predictor. Languages spoken in similar climates—tropical rainforests, deserts, arctic regions—organized their semantic dimensions more similarly to each other than languages from different climatic zones, even when those languages belonged to the same family or were geographically close.
To move beyond computational models, the researchers had 253 speakers of Arabic, Chinese, English, Hindi, Japanese, Korean, Russian and Spanish rate 207 concepts along the same dimensions. Again, climate proved the decisive factor. Then came the brain data. Using functional MRI with speakers of 45 languages, the team found that the right anterior temporal lobe—a region crucial for semantic processing—encoded this shared conceptual structure across all brains. Crucially, the neural differences in how people processed language correlated with how climatically distant their home regions were.
The picture that emerges is elegant: over countless generations, the physical environment shapes how sensory, emotional and social experiences feel and matter to communities. A word for "cold" in a tropical language carries different conceptual weight than in a polar one. Concepts of water, shelter, seasons and danger become interwoven with language in ways that reflect actual lived experience. This doesn't mean climate determines language—culture, history and innovation still matter enormously. But it suggests that the climates humans inhabit leave measurable fingerprints on how we carve up meaning itself.
This work opens new ground for understanding how language, brain and world are not separate things but deeply entwined—and why translation, ultimately, requires more than a dictionary.