onlooker wrote:I was hoping someone can offer some of the latest and best ideas on VIABLE geoengieerig options or else we are just wasting time. And as scientists are conceding that appears to be our last option to avoid catastrophic climate change
KaiserJeep wrote:
....there are Geoengineering proposals to reclaim the Antarctic continent, heat it with the natural gas from methane hydrates, and increase the solar insolance via orbital mirrors to where we could grow food and people could live there. There would of course be some sea level rise associated with this, but we can always line all the continents we are actually using now with giant levees and dikes, like this:
That would be REAL GEOENGINEERING, making a planet for 100+ billion humans to live on. We would of course increase the carbon content of the atmosphere to optimize plant growth, and moderate the equatorial temperatures by deflecting some portion of their natural sunlight to the Antarctic. We would be in effect making a colossal A/C for the tropics and making lots more temperate climate zones for humans to live in. Wanna talk about that?
Plantagenet wrote:-snip-
Sure.
For instance you say that melting all the ice in Antarctica would cause "some sea level rise" but we could build dikes to hold it back from our cities and fields.
If you do the math, melting Antartica (and might as well throw in Greenland and all other glaciers as well) would cause sea level to go up by 70 m (about 230 feet).
I seriously question if you could build a wall 250 feet high all around the current coastline to hold the sea back. Not even the Dutch could do that. Not even Trump could build a wall that big.
And how much would it cost?
For comparison, Big Ben is about 300 feet high
Cheers!
KaiserJeep wrote:Newfie, 7.5+ billion humans is not "failing massively". It is somewhere between "pretty good" and "massively successfull".
onlooker wrote:And yet we have these boasts of 7 geoengineering solutions to climate change. Perhaps, other posters can explain why none of them are likely to work. Or why one or more could work
https://www.treehugger.com/natural-scie ... hange.html
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