Houston we have problem

[a completely inoffensive name]

I'm interested in hearing about the ups and downs of geo-engineering again.

I have actually read of a few theoretical geo-engineering ideas that don't sound *that* far-fetched.One of them were a fleet of cheap long vertical tubes that pumped cold water from below up to the surface to cool surface temperatures down. They were powered by extracting energy from the waves if I remember correctly. Not exactly practical but not a giant space mirror to reduce the sunlight hitting the earth.Also, idk if this counts as geo-engineering but there were trials (I think) with artifical cloud seeding to promote water droplet formation and rain in dry areas.

[gaelic cowboy]

I have actually read of a few theoretical geo-engineering ideas that don't sound *that* far-fetched.One of them were a fleet of cheap long vertical tubes that pumped cold water from below up to the surface to cool surface temperatures down. They were powered by extracting energy from the waves if I remember correctly. Not exactly practical but not a giant space mirror to reduce the sunlight hitting the earth.Also, idk if this counts as geo-engineering but there were trials (I think) with artifical cloud seeding to promote water droplet formation and rain in dry areas.

Probably the easier geo engineering project would be to paint large areas of the earth to reflect sunlight, this would hopefully encourage the growth again of land ice.

Sure it's a big undertaking but it has a simplicity about it and would need no to low energy input once done, also crucially we dont need much in the way of adavnced tech either to do it.

Happily it would not have any unforeseen affects on our climate unlike many of the other projects I have heard about over the years.