"So Dave, Ol, what IS your favourite tetrahedral molecule?" is not the most F of AQs we get, but the answer - since you asked - is of course CH4, or methane to its mates.It may lack the celebrity cachet of CO2, but boy does methane pack a punch in the warming stakes. In fact it packs 84 times as much of a punch, which is one reason sleepy men in suits have started announcing plans to gaffa tape some of the places from whence it guffs.So this week we don our lab technicians' coats to mansplain the sources of this fleece-like molecule, and point our microscopes at the newly penned international agreements to investigate whether they're worth the vellum they're written on.COME AND SEE US LIVE! On 9 December join Dave and Ol* for a Q&A with the writer & director of the Mark Kermode-endorsed The Atom: A love affair documentary. Tickets are £8, and include access to the film for a week. 50% discount for babble patreon supporters. Kick-off 7.30. Sign up here. *(On Zoom)Sustainababble is your friendly environment podcast, out weekly. Theme music by the legendary Dicky Moore – @dickymoo. Sustainababble logo by the splendid Arthur Stovell at Design by Mondial. Ecoguff read out by Arabella. Love the babble? Bung us a few pennies at www.patreon.com/sustainababble.MERCH: sustainababble.teemill.comAvailable on iTunes, Spotify, Acast & all those types of things, or at sustainababble.fish. Visit us at @thebabblewagon and at Facebook.com/sustainababble. Email us at [email protected].