Eat a sandwich, contribute to global warming...
A study by the University of Manchester concludes that our taste for sandwiches may not be politically correct.
The study says that the processing, packaging and refrigeration of meats such as bacon, ham and sausage that go into various sandwiches leave a carbon footprint that harmfully affects the environment. See http://www.manchester.ac.uk/discover/news/what-is-the-environmental-impact-of-your-lunch-time-sandwich/ .
So don't be surprised, when you next order a sandwich at your favorite restaurant, if someone labels you a "climate-change denier." To assuage your guilt, buy some carbon offsets every time you eat a sandwich, like Al Gore does to balance out his petroleum-emitting private plane rides.