Nature and EnvironmentGood CO2, bad CO2? To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoNature and Environment02/13/2020February 13, 2020We couldn't live without CO2 in the air, but too much of it is dangerous. What is CO2, where does it come from and what are the biggest CO2 emitters?https://p.dw.com/p/3XbSfAdvertisement