The amateur climate engineer
I am so amateurish that I don't even know the word for stuff like changing the albedo and sequestering Carbon.
My favorite Idea remains the Clamshell alliance. That is to grow lots and lots of clams and oysters and stuff (with artificially expanded clam beds) . Eat them (I can help out) and build huge statues out of shells in the desert. Most Carbon on Earth is in limestone not coal or forests of in the atmosphere. Why not ?
I read on some blog about the idea of taking agricultural waste (corn stalks straw junk) and dumping it in the deep ocean.
Or how about taking it someplace cold ?
Or wood. I mentioned that the US sequesters carbon by building more and more ridiculously huge houses. Logging reduces global warming provided the logged trees are replaced (as they are in the USA). A natural forest reaches a steady state in which as much wood rots as grows. A repeatedly logged forest or a tree farm keeps sequestering carbon.
Matty Yglesias is a big fan of putting chalk in the asphalt in cities were people use air conditioners but don't heat in the winter. What about roofs covered with tar (dumb dumb dumb) ?
I have a new dumb idea about icebergs. Hows about towing them towards the poles so they melt slower (also they are white you know. Not much sun there but some).
Finally the dead sea is dying. Water is so precious around there that it is shrinking. Dead sea level is well below the mediterranean level. A tunnel from the coast to the dead sea would stabilize the level of the dead sea and generate lots of electricity.