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Dire news about the effects of pesticides caused environmental concerns to peak in the 1960s. US citizens called on their government for information about environmental topics, including potential human health effects. As a result, the National Library of Medicine (NLM) took up the challenge of including information about hazardous chemical substances to its mix of biomedical databases. Today, NLM's Toxicology and Environmental Health Information Program (Tehip) continues to innovate, using advanced IT to present its ever-growing archive of reliable science information.