Bad science is everywhere. People buy more expensive brand name aspirin than an equal dose in a different packet. Cosmetic adverts are peppered with pseudoscientific breakthroughs and ostensibly positive statistics. Newspapers and TV news (and sadly not just the tabloids) are riddled with scare stories of cannabis being 25 times stronger, or miracle cures that will make everyone and everything fit and healthy immediately. Ben Goldacre (NHS doctor and [http://www.guardian.co.uk/science/series/badscience Guardian columnist]) cuts through the bullshit and gives people the tools to spot such nonsense for themselves.