This hacker conference installed a literal antivirus monitoring system

Organizers had a way for attendees to track CO₂ levels throughout the venue—even before they arrived.

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[odikweos]

Love it. I always get sleepy fast in high CO2 env, there was a particular conference room I avoided for 5+ years after realizing what always happened there.

The sad thing is that we've raised CO2 levels on the planet so much.. no one really talks about it, but we're probably a fair bit dumber than our forbears all the time.