> Increasing the CO2 concentration in the air we breathe, even by the relatively small amount caused by burning fossil fuels, has been shown to lower human cogn

> Increasing the CO2 concentration in the air we breathe, even by the relatively small amount caused by burning fossil fuels, has been shown to lower human cognitive function. Does that count as poisoning? Very minor cognitive impairment levels can happen in worst-case scenario in 2100 and assuming current increase of CO2 concentration over time, it shouldn't happen before 2300.