For those interested in looking at this science in more depth, there are a number of websites and researchers on the interweb who are worth a visit;
This website has a fabulous timeline section which goes back to the very beginning, pre 1945 ; https://weathermodificationhistory.com/
The following is hosted by Dane Wigginton that also has a plethora of resources and articles ; https://www.geoengineeringwatch.org/
This is NZ based Claire Swinney's website ; https://chemtrailsnorthnz.wordpress.com/
and another NZ Based website run by Pam Vernon ; https://envirowatchrangitikei.wordpress.com/