>We need to accept this reality instead of shaking our heads at one another in faux reproach (probably over dinner, made from 20 ingredients shipped from all across the globe).

FWIW, the carbon footprint of shipping produce from e.g. Chile is so low that you would create a bigger impact by driving an extra mile to get farm-fresh produce.

Whatever the solution is, "eating local" isn't it: it literally makes things worse.