Great excerpts from "THE ZEN of FISH" by Trevor Corson. Unfortunately I haven't eaten sushi since getting food poisoning at Sushi Rocks (warning) in SF on my first visit... Anyway, here you go

Three Sushi bar diners were last night being tested for radiation poisoning following the death of ex-Russian spy Alexandra Litvinenko. They are feared to have inhaled traces of a pinhead-sized grain of Polonium-210, slipped into Litvinenko’s food by an assassin.

Three Sushi bar diners were last night being tested for radiation poisoning following the death of ex-Russian spy Alexandra Litvinenko. They are feared to have inhaled traces of a pinhead-sized grain of Polonium-210, slipped into Litvinenko’s food by an assassin.

In Japanese cuisine, sushi (寿司, 鮨, 鮓, sushi?) is a food made of vinegared rice, usually topped with other ingredients including fish (cooked or uncooked) and vegetables. Outside of Japan, sushi is sometimes misunderstood to mean the raw fish by itself, or even any fresh raw-seafood dishes. In Japan, sliced raw fish alone is called sashimi and is distinct from sushi.There are various types of sushi: sushi served rolled inside nori (dried and pressed layer sheets of seaweed or alga) called makizushi (巻き) or rolls; sushi made with toppings laid with hand-formed clumps of rice called nigirizushi (にぎり); toppings stuffed into a small pouch of fried tofu called inarizushi; and toppings served scattered over a bowl of sushi rice called chirashi-zushi (ちらし).