 Just that the fizzy drink shelves are looking a little empty at the moment. Somewhat ironically it's because I'm actually running low on carbon dioxide which is the main ingredient to make a carbonated beverage. Have you ever wondered where that carbon dioxide actually comes from to begin with? Well in New South Wales one of the main suppliers of food grade carbon dioxide is an ammonia manufacturing plant and that manufacturer is currently shut down. Not making ammonia and therefore not making food grade CO2. So if we want to make ammonia we start with water, air and methane which is also known as natural gas which is you guessed it a fossil fuel. We put these through a series of reactions including steam methane reforming of the natural gas, partial oxidation of the natural gas which is done with air so the nitrogen tags along and the water gas shift reaction. Now we put methane in doesn't come out so we can get rid of that. We put water in doesn't come out we put oxygen doesn't come out so our main products are hydrogen carbon dioxide and nitrogen. Of course ammonia doesn't have any CO2 in it so we need to get rid of it but also it poisons the catalyst that you use to make ammonia so you really need to get rid of it for a number of reasons. So what we do is we put the mixture of gases through a solvent which basically absorbs the CO2 leaving the nitrogen hydrogen to carry on. We then strip out the CO2 from that CO2 rich solvent into a pure stream and the rest of it carries on again. Food grade CO2 is made to carbonate our beverage which when we open it ah we release CO2 which remember where that came from oh that's right methane which is a fossil fuel. Every time you crack a beverage you're releasing a greenhouse gas. Yeah one day we're going to need net zero fizzy drinks. Also I didn't balance an equation it's annoying me.