[Sunfish (Ray)]

Thanks Gary,
informative science news.

I deeply apologise for all the breathing I have been doing since birth.
But I have planted a lot of trees.

Originally Posted by gary

If you are about 60 years old, then in 1958, CO2 levels were measured at about 315ppm.

Today, they are 415ppm.

Video of how CO2 levels are measured :-
https://scripps.ucsd.edu/programs/ke...8/04/12/video/