Combined, exposure from Chernobyl and Fukushima is estimated at 648,000 person-Sieverts. Exposure from eating a banana is estimated at between 0.09-2.3 microSieverts. Let’s use a figure of 0.1 microSievert per banana. Thus, exposure from Chernobyl and Fukushima equates to 6,480,000,000,000 Banana Equivalent Doses – that’s 6.48 trillion bananas or, if you prefer, 6.48 terabananas or 6,480 gigabananas.