We may have stopped hearing about the carbon dioxide shortage, but its not gone away and its curiously at odds with what we hear about having too much of it in the atmosphere. Laura, Antonia and Ghinwa discuss some chemistry behind separating carbon dioxide from other gases, some industries that produce carbon dioxide and why they don't make use of it, buses that run on methane, home-brewed beer and popping candy(!)

Read an article based on this episode, by Laura Leay on medium.