Ahead of COP 26, a rush of businesses declared their commitment to \u201cnet zero\u201d emissions targets. But concerns were raised about how credible these targets were. Critics pointed out that many companies\u2019 plans did not require them to change behaviour any time soon, or be held accountable for realising them - and that some of their promises just weren\u2019t good enough. In this edition of The Climate Question, Kate Lamble and Jordan Dunbar ask how much can we believe in companies\u2019 promises on climate?