Here are a couple of pdf downloads that directly address this topic:
1. Misleading science claims:
http://www.senseaboutscience.org.uk/...sciencebit.pdf
2. How to tell if the "science" you're hearing about is bogus:
http://www.senseaboutscience.org.uk/...eviewGuide.pdf
These are published by a non-profit charitable trust locaked in England. You can read about them here:
Sense About Science