The documentary "Black Wind, White Land" and books entitled "Footprint of the Black Wind" and "The Trace of the Black Wind" are all about the same subject matter: the Chernobyl disaster.
"I did a google on "black wind" and found it to mean radioactive fallout. "
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Thanks. I didn't know. Well, we do seem to worry about "dirty bombs". Putting my tinfoil on, or maybe I don't even need to -- and having read some articles about both the missing Russian nukes, and the Pakistani nuclear scientists having worked with Al Qaeda, I think it's not outside the realm of possibilities, that the terrorists have and plan to detonate real nukes, not "just" a dirty bomb.
I think this scenario is being downplayed to avoid panicking people, and the dirty bomb excuse is being used to look for both the dirty bomb and the real thing -- you look for them the same way, with radiation detectors.
There is also a lot of talk about the shipping containers -- they could easily have smuggled any kinds of bombs in via that route.
Black wind and black smoke are two different things, though...right? Nuclear fallout and basically widespread and nasty death by some covert means. I think.