Just rub a greenie if you want someone to come up with a ridiculous idea. Being a greenie, their idea will cause at least a dozen times as much damage as they think needs preventing.

They are now taking nanoparticles out of makeup because they have belatedly found them to be harmful. But don't let that stop us spreading them in another form all over 2 thousands of miles of coastline.

Nick, half understanding something said by some scientist & then bleating about it is not productive. You need to actually understand something, & have enough experience in the practicalities of the subject, or you simply make a fool of yourself. Believing all academics know which way is up is the first mistake. Taking most of their waffle seriously is the second.

There are quite a lot of people on here from time to time who know a great deal about perhaps only a few subjects each, but that adds up to a vast amount of actual knowledge, not the type of crap used in grant applications.

Your rainwater is brought to you by greenies . The sun-god evaporates the Plastic Ocean nano-particles and gives you ...salt...

"Marine cloud brightening is a technology designed to increase the brightness of clouds by mimicking natural processes, in this case the generation of aerosols by sea spray. It requires the generation of small salt-water droplets which evaporate in the planetary boundary layer to give a nano-scale grain of salt. "

How could clouds be kept in position above the GBR coral during persistent wind that blows most of the year? Its often difficult to get an anchor to hold a boat in persistently windy GBR waters.

What would happen to salt in air blown inland?

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Hold clouds over your reef , just the beginning.
Or else make some more using Bunnings sun-rays , sea water and southerly winds. Salty bits in the Qld air have been a problem for years and corrode bull-dozers , chains and cattle trucks. Salt is fine for Pauline's salty chips , chicken salt or nano-salt . Salt in cosmetics is bad and causes red hair.

Nick, what quantity of nano particles of what are you indulging in?

It's about 50 cu metres second per pump with salt at 3.5% weight. Seagulls and plastic are filtered out and re-cycled.