Welcome to the latest Ci newsletter! This fortnight's edition pre-emptive festive edition includes Thanksgiving food chemistry, chemistry advent countdowns, and some interesting discussion on whether anyone knows what colour gaseous potassium is. As you'll have noticed, this edition comes a day later than usual. I've decided to shift the usual publication day of these newsletters to a Tuesday, as my Mondays are fairly hectic and I was finding myself struggling to get these together on time to go out. So keep an eye out for the newsletters on every other Tuesday from now on!