People Fixing the World Folgen

One of every five bird species could be extinct within the next century. Whether it’s down to the shiny glass office blocks materialising all over cities or the trawlers sailing ever-further out to sea to feed our growing population, our birds are seriously under threat. This episode looks at two particular successes when it comes to helping the world’s feathered friends: how Toronto has become a world leader in making cities bird-friendly, and how a group of enterprising conservationists has almost eliminated the deaths of albatrosses as a result of deep-sea fishing.Presenter: Tom Collls Producer: Harriet NobleImage: Pair of albatrosses Credit: ShutterstockCORRECTION: In this programme we say that two buildings in Toronto where bird collisions were high lost court cases and had to be adapted. In fact they did not lose the court cases. The charges were dismissed but as a result of the trial bird-safe markers were applied to sections of the buildings.

More than $20bn is spent on chewing gum around the world each year. A lot of that gum will end up stuck to the streets. That's why gum is the second most common kind of street litter after cigarette materials. In the UK councils spend around £50m each year cleaning up the mess. But British designer Anna Bullus had an idea - what if the sticky stuff could actually be recycled and turned into useful objects? Presenter: Harriet Noble Reporter: Dougal ShawPhoto caption: Shoe sole made of chewing gum Photo credit: BBC

Social media and messaging apps play a role in the extremist “radicalisation” of individuals. Tech companies have tried to get better at identifying extremist content and taking it down, but some specialists advocate an alternative approach – to use these platforms to engage with extremists one-to-one, to confront them and talk them round.Last year, the Institute for Strategic Dialogue in London organised hundreds of conversations on Facebook messenger between activists and those expressing extreme Islamist and far-right sympathies. World Hacks has been given exclusive access to their report.This experiment raises many moral and practical questions. Do those posting extreme views online still have a right to privacy? At what point do we judge someone as suitable for this kind of intervention? And what exactly is the best way to start a conversation with an extremist?Presenter: Elizabeth Davies Producer: William KremerPhoto credit: Colin Bidwell (BBC)CORRECTION: In this programme, we say that counter-conversations were part of Facebook’s Online Civil Courage Initiative (OCCI). It was in fact a separate project, also funded by Facebook.