I’m in the US for a few days this week visiting my in-laws and just realized it’s labor day weekend! You know what that means: hot dogs! The problem is that eating a lot of hot dogs can equal cancer of the colon, pancreas and COPD. It’s not the hot dogs themselves of course, it’s the cancer-causing sodium nitrite, a food preserving chemical that should have been, and almost was, banned in the 1970s by the USDA. But hey, it’s labor day and I’m definitely going...