George Smith harpoons the hysteria over castor beans and ricin.
Contrary to American war on terror mythology, castor seeds don’t make a good weapon. They contain ricin and it’s easy to grind them to powder but, In fact, it is harder than one might think to achieve simple poisoning.
Science (gasp!) at the link.
It’s been within that last several weeks that I saw a major network’s TV detective show (can’t remember which one) that propagated the ricin myth.