The acid rain that caused damage to vegitation all around the world, similar to that pictured above was the result of sulphate compounds emitted in the exhaust fumes from coal or oild burning industries such as eletricity generation, metal ore refining and smelting, cement manufacture and or manufacturing chemicals. Due to government intervention prompted by public pressure these industries made enormous steps in cleaning up their act. So successful were they that the weirdie - beardies of the environmentalist movement had no reasonable grounds to continue complaining about their main hate objects, oil and coal, because in the developed nations at least, acid rain ceased to be a problem. In the undeveloped nations people had more immediate threats to occupy them and corporate businesses continued burning oil and coal in 'dirty' processes.

Common sense and empirical evidence (above) suggest humans should not be trying to control that which we do not fully understand, but the world's newest religion “The Science” feels as though it knows better than nature and approximately three and a half billion years of evolution how to create a perfect ecosphere and a “better” planet, i.e. one that is configured to support to the agenda of Gates and his ilk.

An article from  members of the team involved in the study explains that there are challenges to generating sulfuric acid in the stratosphere. It's production as a by - product of this insane scheme to block sunlight is, in a rather mealy - mouthed phrase “less efficient than might have been previously expected.”

For "less efficient" read "more fucking disastrous". 

Citing statements made by the researchers involved with the study the report's authors add this caveat to their report on the research's results:
“Thus, more groundwork exploring the chemistry of how sulfuric acid and its building blocks will react in the upper atmosphere is required in order to confidently move forward with this climate geoengineering strategy,” 

Blocking out the sun with sulfur is definitely not a good idea

Before governments allow psychopaths like Gates to put into the atmosphere the stuff that just a few decades ago we expended so much money and effort on preventing its entry into the air, it is important to understand “the physics and chemistry involved in such a radical geoengineering project. It was necessary to remove certain sulphur based chemical compounds because one in the upper atmosphere the action of sunlight on the sulphate vapours naturally manufactures sulphuric acid which, diluted by liquid H2O as water vapour condenses, causes far more damage than Carbon Dioxide, as the above photo shows. Spraying random chemicals into the skies is idiocy as any chemist (or any writer whose nephew happens to be a chemist will tell you.

It is essential to understand that while the consequences of a slightly raised level of Carbon Dioxide in the atmosphere are unknown (the scare stories are based only on output from mathematical models of the atmosphere, the consequences of spraying chemicals that will combine with other components of the atmosphere to make sulphuric acid that will fall as rain on food crops, forests and green spaces is certain disaster, as we know because we have been there before, quite recently. But it is something the power addicted madman Gates belies he can ignore.

The idea behind sulphur is an oversimplification typical of scientists (a simple minded bunch as you would expect people who spend half their lives with noses buried in books and the other half gazing down microscopes that magnify small details but blind the viewer to the bigger picture. These scientific dolts reason that the sulphur compounds they plan to spray into the sky are the same substances emitted during a volcanic eruption, often blocking out the sun and darkening skies for a time. Big eruptions, such as the eruption of Mount Tambora (Indonesia) in 1815, the largest recorded eruption in history, trigger a phenomenon known as 'volcanic winter.' It was the volcanic winter following the Tambora eruption which inspired the poet Byron to write "Darkness" a poem describing the havoc caused over a wide area by the effects of dust and vocanic exhaust materials into the air. 

from Darkness by George Gordon, Lord Byron

 If Gates and other geoengineering fanboys get their way, this darkness would be “permanent” in order to “fix” global warming. Another idiot genius plan that would destroy the planet in order to save the planet.

During a volcanic eruption, sulfur is emitted into the troposphere, which extends from the ground to  about 10 kilometers altitude. Geoengineering sulphur, on the other hand, involves spewing it out of 747 jets flying at upwards of 20 kilometers, straight into the stratosphere, which is unprecedented and just plain bonkers.

The biggest problem is Bill Gates and other billionaire psychopath members of the Silicon valley World Domination Club do not even consider the possibility of their being wrong. They do not conduct scientific experiments in the real world and observe the results. Instead they pay computer nerds make mathematical models of reality and tweak the data until the equations give the required answer. And then they proceed on the assumption that computers are infallible. 

Such arrogance, detachment from all that is real, such madness, is usually the territory of warior kings, tyrants who achieve power by conquest. They are bad enough, but the tyranny of the weak, the nerds, those who hunger for power but will always be too weak to seize it, who instead work their way into positions of influence through double talk, trickery and deception, they are a million times more dangerous.