Experts tell us that life can’t survive CO2 levels over 400 PPM, which makes train travel rough at 2,500 PPM.
Greta Thunberg can see CO2, which must make it difficult to also see what she is eating on the train.
Experts tell us that life can’t survive CO2 levels over 400 PPM, which makes train travel rough at 2,500 PPM.
Greta Thunberg can see CO2, which must make it difficult to also see what she is eating on the train.