4 ms·

I guess it’s good news it took a century of effort go from 200->420 then. Hopefully we can stop it around 600 or so.

• sa1 5y ago
  The concern is climate change, unlike indoor CO2 concentrations.
  • amptorn 5y ago
    Yeah. These figures are completely irrelevant. The problem of increased CO2 concentration in the atmosphere isn't drowsiness, headaches and eventual suffocation, the problem is global warming. The figures seem to imply that once CO2 concentrations reach around 1000ppm we'll have a problem. But we have a huge problem right now.
• fallingfrog 5y ago
  I suspect it’ll be higher than that, 700 at least
  • jellicle 5y ago
    The IPCC has been forecasting up to 1150 ppm by the year 2100, and they are a conservative forecaster (climate changes have been following their highest forecasts, or even higher). So yes, your grandchildren may well live in a world where the freshest possible outdoor air is such that it makes humans feel sluggish and lethargic, like a stuffy indoor conference room today.