Here is a frequently updated page from the UC Berkeley Nuclear Engineering department: they're reporting test results from air, rainwater, tap water, and milk.

Here is a frequently updated page from the UC Berkeley Nuclear Engineering department: they're reporting test results from air, rainwater, tap water, and milk. http://www.nuc.berkeley.edu/UCBAirSampling http://www.nuc.berkeley.edu/UCBAirSampling The detected amounts are tiny, and the site places them in context of other kinds of exposure.