"What We Need Now," the monthly podcast by Greenpeace USA, is where you can learn about the work grassroots leaders are doing from the leaders themselves.

Each episode, the hosts explore a different topic related to the intersections of climate, racial and environmental justice, and our movement for a green and peaceful future, and pass the mic to local leaders who are fighting for the world we want to see. 

Greenpeace is an independent, campaigning organization which uses non-violent, creative confrontation to expose global environmental problems, and to force the solutions which are essential to a green and peaceful future.

Nerd Hurdles — the podcast that helps you overcome your geek prejudices... with snark 

Nerd Hurdle - nerd hur'dle - (nûrd hûr'dl) n., v. -dled, -dling -n. a barrier or blockade of 'nerdiness' that an individual not of the nerd persuasion must metaphorically 'leap' over in order to enjoy or fully appreciate a given experience or situation. She loves Mel Gibson but the aliens were just too big a nerd hurdle for her to really enjoy Signs. -v. to successfully overcome a nerd hurdle. 

Each week one of geekdom's sacred cows is put on the chopping block as Jakob and Mandi dissect it with an irreverent and ruthlessly critical eye. Occasionally the cow makes it out unscathed, but even when when the blood of your favourite movie, TV show, book, comic, game, character or pastime is spilled, there's something to laugh about (as they twist the knife).

Material World

Weekly science conversation, on everything from archaeology to zoology, from abacus to the antipodean rodent zyzomys, by way of meteorites. Presented by Quentin Cooper, and airing every Thursday, 4:30 pm on BBC Radio 4. 

Romer David is following