Yes, great article. Hope you explore this more--these containers permeate our lives, are vectors for invasives and even illegal immigrants I've heard (sounds like a terrifying way to travel/die). Being "intermodal"--from truck to train to ship means a lot stuff is changing places.
I'm afraid we'll end up with a world with a couple dozen super-invasive species everywhere.
We moved from the midwest to mid-Pacific last year via a 20-footer. We know now we brought various species of mold and mildew that liked the new climate, but what else? I'm also seeing locals using something I just learned are Intermediate bulk containers, which can move liquids and stack about 2 across x 2 up inside shipping containers. They're generally about 4'cubic give or take. Seem very hackable.
Also, folks here re-use wooden shipping pallets in cool ways. In LA I saw them turned into great store displays. But what else travels in that wood? Where did that wood come from?