A reader recently informed me about two Web sites that offer useful lists of health care scams, quacks and general misinformation.
The first, Quackwatch, seems very extensive. It lists all sorts of phony health care claims, practitioners, etc. in alphabetical order. One can spend hours there going through the various sections. There's a Navigation Guide to make that easier, and a useful Search function that helps locate articles of relevance. For example, I ran a search on "homeopathy", and found several useful sources.
The second Web site, the Genetic Literacy Project, lists "8 advocacy organizations and websites spreading misinformation about technology, chemicals, agriculture, food and environmental risks". This is rather more controversial: their list includes Greenpeace and Friends Of The Earth, which have many supporters and advocates. Nevertheless, they provide evidence to support their inclusion in the list. You'll have to read this article for yourself, and decide which side to believe.
I'm sure there are more such resources out there. If you know of one or more, please tell us about them in Comments. We all need accurate information.