Ad absurdum, dust in the higher parts of the atmosphere can cause to literally freeze over the whole planet. I am no optimist, but not due to technological lim

Ad absurdum, dust in the higher parts of the atmosphere can cause to literally freeze over the whole planet. I am no optimist, but not due to technological limitations, but economic ones — the only hope is “unknown unknowns”. We might invent some new technology that could wipe clear our existing estimates for the better.