Pick Your Poison

ToxSeek from the National Library of Medicine is a "meta-search and clustering engine for environmental health and toxicology." It searches multiple Web databases using "natural language processing and artificial intelligence to retrieve, integrate, rank, and present search results as coherent and dynamic sets. ToxSeek'’s results 'clustering' feature helps users to more easily identify particular concepts. These 'clusters' are created from what is retrieved in the original query, and can be useful in uncovering a specific concept or focus for more in-depth searching."