Bryan Johnson· Author
Check if your car has a partial recirculation mode, these help keep PM2.5 at lower levels while maintaining a low CO2 concentration too.
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The headline is broadly defensible, but the qualifications matter. Effect sizes vary by population, the strongest claims rest on shorter trials, and credible voices push back on how it's typically framed.
Check if your car has a partial recirculation mode, these help keep PM2.5 at lower levels while maintaining a low CO2 concentration too.
Every Sunday: the week’s new conflicts and verdict changes — and nothing else.
Native comments, Twitter mentions, and Reddit threads about this claim — surfaced together so the conversation isn't fragmented across platforms.
Bookmarking — the dossier-vs-overview split is the right call. Most of the time I want overview; sometimes I want receipts.
Would love a "what would change this verdict" RSS feed. Sign me up if it exists.
Activate air recirculation in your car when travelling through busy and polluted roads. Keep in mind that full air recirculation should only be used for a few minutes, as longer use can increase CO2 concentrations, possibly affecting alertness and focus while driving.