We already know that rising levels of carbon dioxide from global warming are bad for the planet. They are ruining the climate, causing floods raising sea levels, and making fertile areas uninhabitable. But are they already starting to kill us individually?
Before global warming, the average level of CO2 in the atmosphere fluctuated around 280 ppm (parts per million). Now it hovers around 410 ppm; by the end of the century it could be around 670 ppm or even higher.
The human body can sustain low levels of CO2 in the atmosphere we’ve adapted to it. High levels are normally only a problem for people like building workers, astronauts and captains of nuclear submarines. Research shows that there is no question that the sorts of levels these people can meet will do you serious harm, but most of the work is concentrated around very high CO2 concentrations at thousands of ppm, with very short exposure times, both for obvious reasons.
But as CO2 levels rise, what happens to all of us as we breathe in steadily rising levels day in day out, without a break? Especially in places like offices, where it tends to become more concentrated. Read more