Talking Clean
Method notes, source analysis, and site-selection practice — written from the measurements, not opinion. Every figure traces to a named public dataset and can be reproduced on the map or through the API.
The 28-Day Relocation Check
One week on the ground, one in the public record, one on paper, one to decide in person. Hostile-hour visits, utility water reports, transmitter registries, radon classes — the due-diligence method most buyers skip.
Read the brief →Data atlas
Rankings computed from the live grid — every figure traceable to a public dataset, reproducible on the map or through the API.
Method & practice
How to turn a whole map into a shortlist you can defend.
Reading a Cell Like an Analyst
The 15-minute routine — overview, layers, report, export, verdict — that turns a place into a decision you can defend.
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From 26 Million Data Points to a Shortlist of Five
Disqualify on your non-negotiables first, then rank — why filter order beats browsing.
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The Threshold Table: Your Non-Negotiables
Set a defensible pass/fail line per factor, anchored to WHO, EU, EPA and USGS standards.
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Comparing Two Countries by Evidence, Not Vibes
National averages lie — the best cell in a "bad" country can beat the worst in a "good" one.
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Ranking a Place You've Never Seen
When you can live anywhere, constraints-first turns the infinite map into a ranked shortlist.
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Rent Before You Buy: A Data Trial Run
What to measure yourself on site — radon, indoor PM2.5, 3 a.m. noise — and why in the worst season.
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Citation-Grade Due Diligence for Real Estate
Environmental DD that survives a client challenge — every figure traceable to a public source.
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The Habitability Score, Explained
How composite scoring works — normalising, weighting by your values, and why no single number is enough.
Read →Environmental briefs
One factor at a time — the mechanism, the public thresholds, and how to read it.
Air Quality at Your Postcode
Why a green daily AQI hides a bad annual mean, and how rural valleys trap particulates.
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Radon: The Postcode Lottery
The invisible, geology-driven gas no national dataset captures for your exact home.
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Water Hardness & What It Does to Pipes
USGS classes, the Langelier index, and why soft acidic water is the real corrosion risk.
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EMF: Living Near Towers, Calmly
The inverse-square law does most of the reassuring. ICNIRP levels and what "IARC 2B" means.
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The Night-Noise Map
WHO's 40 dB night line, why decibels are logarithmic, and the noise you never wake for.
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Flight Paths & the Quiet Neighbourhood
Overflight runs in corridors, not circles — the quiet house can sit close to a runway.
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Light Pollution & Sleep
The Bortle scale, satellite night-lights, and blue light's grip on your melatonin.
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Wildfire Smoke Drift Zones
You don't need to be near the fire — smoke PM2.5 travels thousands of kilometres.
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Pollen, Mould & the Allergy Calendar
Tree, grass and weed pollen through the year, and the humidity line where mould takes hold.
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Heat Domes & Choosing Cool Ground
Urban heat islands, the wet-bulb limit, and elevation as free air conditioning.
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The One-in-a-Hundred Floodplain
A 1% annual chance compounds to roughly one-in-four over a 30-year mortgage.
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Coastal Erosion & the Sea View
The Bruun rule: a small sea-level rise means a much larger shoreline retreat.
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Earthquake Risk & Bolting Down
Ground acceleration vs what you feel, and the cheap retrofit that pays for itself.
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Forest Loss & Tree-Cover Change
What local canopy quietly buys you: cooler streets, cleaner air, calmer stormwater.
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Industrial Sites & "Cancer Clusters"
Why most apparent clusters fail scrutiny — while pollutant proximity stays measurable.
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Pipeline & Railway Danger Zones
Potential-impact radii and hazmat corridors — public record, invisible to most buyers.
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Grid Reliability & Blackouts
SAIDI and SAIFI decoded, and why a radial rural feeder fails where a meshed grid rides through.
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