In 2024 the WHO dropped the droplet-versus-airborne distinction that underpinned decades of advice. Exhaled particles behave like smoke, not falling cannonballs — which moves ventilation to the top of the list and surface cleaning near the bottom.
The 2024 Lancet Commission put 45% of dementia cases down to 14 modifiable risk factors. Two were added that year — midlife cholesterol and untreated vision loss. Almost none of the list is something you buy, and no supplement appears on it at all.
Over 400 Americans a year die from carbon monoxide unrelated to fires. The symptoms impersonate flu — but CO causes no fever, affects everyone in the building at once, and eases when you leave the house. What actually distinguishes them.
The EPA gave water systems until 2034 to replace up to nine million lead service lines. How to find out in one minute whether yours is one of them, which filter specification actually matters, and why boiling makes lead worse rather than better.
The FBI logged its first AI-fraud category in 2025: 22,364 complaints and $893 million. A few seconds of public audio is enough to clone a voice. The scam has one shape, one tell, and one free defence that defeats all of it.
Observation surveys found no unrestrained infants on the road — yet a quarter of infant crash deaths were unrestrained. Car seats cut fatal injury risk 71% for babies. The stages, and the five installation mistakes that keep showing up.
Dampness affects an estimated 10–50% of homes, and the evidence linking it to asthma and respiratory infection is solid. But the visible mould is a symptom — and the sprays, anti-mould paints and test kits sold to treat it leave the cause untouched.
The WHO and ILO attributed 745,000 deaths in a single year to long working hours — a 35% higher stroke risk at 55+ hours a week. And the WHO defines burnout as workplace stress that was not managed, which puts the failure somewhere other than your resilience.
US traffic deaths fell to 36,640 in 2025, the second-lowest rate on record. But among rear-seat occupants killed in crashes only 32% were belted, against 84% everyday use — and an unbelted passenger behind you is a danger to you.
Recorded US heat deaths rose from 297 in 2004 to 1,714 in 2022. In New York City records, none of the at-home heat-stress deaths had air conditioning in use — and a quarter had only a fan. Why a fan is not cooling, and what actually works.
