From Robert Karp at the Biodynamics blog:
Fukushima nuclear plant explosion. Image via Alice Online (click image for source)
“The recent tragic events in Japan and news of increasing radiation fallout around the globe have led to a growing interest in past reports from Europe (primarily) of a possible role of the biodynamic preparations in protecting farms and food from radioactivity. Understandably, this is quite a “hot” topic in biodynamic circles, evoking much debate.
I am thrilled to report that recently two members of the Biodynamic Research Working Group (BDRWG), Maria Linder and Barry Lia, have agreed to procure and evaluate all the available research and reports relating to this question and to draft a synopsis that we will make available through our journal and website. The BDRWG will also take up the question, in its next meeting, of whether a new research project in this direction is warranted and if so, how it would be best undertaken. These are small but important steps.
Personally, I think we are dealing with a very delicate matter. On the one hand, I would suggest that there is good reason, from a spiritual scientific perspective, to believe that some biodynamic food, farms, and practices may (and I say MAY) offer a measure of protection from radioactive fallout or at least offer a kind of healing antidote. As such, this is indeed an important time to encourage people to intensify their work with biodynamics. On the other hand, I agree with many members of the BDRWG who believe that we should refrain from making any claims for biodynamic products or practices until we determine if we have a genuine foundation for such claims.
Let me elaborate.
The idea that biodynamics may address radiation derives from the perspective that the biodynamic preparations and methodologies are designed, in general, to stimulate what are called in biodynamics the “etheric formative forces” or “life forces” active in nature. These are forces that stand behind and are active within all biological life — whether in soil, plants, animals, or humans — but which have their source in a realm above that of purely physical matter….”
The Bovine 
Related: “Radiated Rain”: http://www.counterpunch.org/pollet07112011.html
Excerpt from that:
“Radiation levels in rainwater collected in Portland, Oregon on March 25, 2011 were 86.8 pCi/L for Iodine 131 (I131), amongst the highest recorded in the US after Fukushima. Rain in Olympia had even higher levels of radioactive Iodine. The Portland result was not posted by EPA until April 4.
The maximum level of Iodine 131in rain in Olympia, WA was 125 pCi/L on March 24, which was not posted by EPA until April 4.
Highest levels in rainwater in California were collected March 22, 2011 in Richmond, CA with levels of 138 pCi/L.
The Drinking Water Standard is just 3 pCi/L (picoCuries per Liter, which is a very small measurement). Thus, people drinking undiluted rainwater n Portland would have consumed and been exposed to Iodine 131 at levels nearly 30 times the DWS, and 41 times the standard in Olympia. There are no results for Seattle or Bellingham areas. The DWS is set at a level based on drinking 2L/day resulting in a 4 mrem per year dose, which is a 1 in 10,000 lifetime risk of fatal cancer in adults, if consumed daily over 30 years. Children are 3 to 10 times more susceptible to develop cancer from the same does, especially because Iodine concentrates in young thyroids. Of course, Iodine 131 may cause non-cancerous health conditions.
If the rain in Richmond, CA had high levels on March 22, one might expect that EPA would have been testing the same day or as close as possible at Pacific Northwest locations that day. However, locations only test once a week or once a month without apparent coordination related to the event, e.g., without apparent increased testing based on weather patterns from Japan and daily events, such as explosions at Fukushima.
The highest levels of Iodine 131 in rain were collected in Boise, Idaho on March 27 and March 22, 2011 with levels of 390 and 242, respectively.
A high level reported by EPA was 150 pCi/L collected in Jacksonville, FL on March 31. This shows how far and wide the contamination can, and did, spread. It also reveals that claims and news reports were false in presenting that the 8 day half-life of Iodine 131 (half of the radiation remains) meant that contamination would not reach across the US. If levels of 150 were in rain in Jacksonville, the levels were much higher days earlier on the West Coast…”