spraying large amounts of sulfate particles into the Earth’s lower stratosphere in order to literally dim out the sun; (it is what they have BEEN doing) https://fox5sandiego.com/2018/11/23/the-answer-to-global-warming-dim-the-sun/

Cloud seeding produces rain! A nano silver iodide solution is sprayed into the clouds, which attracts water molecules. They become heavy, rain is produced. This was used during the Vietnam War, to flood the Ho Chi Minh trail! Chemtrails are completely different! Atmospheric Aerosoles, including Nano aluminum Solutions are sprayed at high altitude, for greater distribution! Nano aluminum penetrates all cells, human , plant animal, including soil and groundwater! Aluminum is very toxic Too Human development in its Nano form! Most humans are already toxic with heavy metals absorption! This leads to a host of illnesses! Including thyroid problems which are very common these days!

There would no need to call them chem-trails if the people doing these things were transparent and open about what it is, and what they are doing. But, HELLO, guess what, they are not open and transparent and they are known liars. Their historical pattern is also clear, government get out of control, have secrets and end up murdering people. So stop trying to police peoples words. I call them chem-trails, you know why? Because they are using chemicals. wow. What if this "cloud seeding" via chemicals is being used for political purposes? The chem-trails being referred are the huge jets blocking the entire sky out with streaks and mushrooming streaks, which are not ordinary tiny bi-planes that you are trying to twist around. op you suck.

I've never liked "chemtrails", and "cloud-seeding" doesn't cover everything they are spraying. A more inclusive term is geo-engineering.

I thought it was crop dusting

I witness it everyday in my home state in Australia.

https://www.smh.com.au/world/thai-rain-making-comes-to-qld-20100808-11q5f.html

"The climate and geology of Queensland drought area is very similar to some parts of Thailand. So we're quite sure this technology can be used effectively in Queensland," Soothiporn told AAP.

The technique largely relies on cloud seeding generally undertaken using chemicals that promote the formation of water droplets within the cloud formations.

The chemical cloud seeding in turn creates clouds with differing temperatures at different altitudes.

There are several stages in the process, with sodium chloride used in the final stage to trigger rain.

"If that kind of cloud is set up in a very good condition, then the cloud will condense into water and the rain will begin falling," Soothiporn said.

In Thailand, the cloud-seeding method has been applied in the largely drought-affected north-east of the country as well as boosting water volume in dams and reservoirs and aiding reforestation programs.

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Quick web search for: American cloud seeding

http://www.nawmc.org/faq/

North American Weather Modification Council

For what purposes is weather modification practiced?

Weather modification, commonly referred to as cloud seeding, is currently used to increase precipitation from clouds, reduce hail from thunderstorms, and eliminate fogs that reduce visibility, usually at busy airports.

What are clouds seeded with?

Clouds can be seeded with a number of different types of agents: silver iodide, liquid propane, dry ice (solid carbon dioxide), and various salt compounds.

What methods are used to deliver seeding material to suitable clouds?

Seeding is typically done either by specially-equipped aircraft or via ground-based generators at higher elevations in mountainous areas.