Ricin in Las Vegas

Yikes! Are going to have to worry about white powder again? I think the last time, the powder was anthrax. I don't remember if we, in the United States, have had the ricin scare, but I do remember something about a scare in Japan a few years ago. As if we don't have enough worries, we now have to worry about someone grinding up castor beans in a hotel room in Las Vegas. What is the world coming to? The investigators don't believe it was an act of terrorism, but time will tell.