Scientists with beards have invented a battery. Trust us, it's more interesting than it sounds.

Despite shameful scientific illiteracy, even the 'Babble gets that this invention - a rechargable proton battery, no less - is potentially Very Important Indeed and quite possibly planet-saving. We investigate.

Also this week, Arnie pwning oil companies and the meat industry calling a spade an exquisite, thoughtfully re-imagined mastication aid.

Sustainababble is your friendly environment podcast, out weekly. Theme music by the legendary Dicky Moore – @dickymoo. Sustainababble logo by the splendid Arthur Stovell.

Available on iTunes, Acast, Soundcloud & all those types of things, or at sustainababble.fish. Visit us at @thebabblewagon and at Facebook.com/sustainababble. Email us at hello@sustainababble.fish.