[sciencemadness]

Not in the United States. I run a web site that publishes information about the making of explosives, chemical weapons, and even restricted nuclear materials. It's all perfectly legal. Most of the information comes from government publications, patents, scientific journals, and books that you'd find in any well stocked university library. Even far less scholarly (and far less accurate) books like the Anarchist Cookbook or Poor Man's James Bond are legal in the US, despite the fact that both books contain instructions for activities that would be federal crimes if successfully carried out.