What are Ostriches for?

There’s something fishy going on in the Czech Republic, where CrowdScience listener Ian lives. He keeps tropical fish, and he’s noticed that when he adds new ones to his tank, they swim with others of the same breed. He wants to know how they recognise each other. Do they know wh ...  Show more

Is silence blood-curdling or blissful? CrowdScience listener Ziqi finds it intolerable and thinks that there’s a good reason for it – silence is so rare in nature that it could be a signal for danger. Presenter Marnie Chesterton is on a mission to test Ziqi’s theory, starting wit ...  Show more

Eggs – a nutritious and affordable source of protein. Or they were. The cost of a box of eggs has been rocketing around the world. And in some places, where it’s long been common to start the day on an egg – supplies are under pressure. In this programme, Ruth Alexander explores ...  Show more

Humans have been accidentally feeding wild birds for millennia; any leftover food scraps to be scooped up by opportunistic, feathered friends. The deliberate feeding of birds, however - placing seeds out on a feeder in the garden, taking crumbs to a nearby park or lake – is a mor ...  Show more

The last banana you probably ate was a type called Cavendish. But this, our last commercially viable variety is under severe threat, as the fungus, called Tropical Race 4, is laying waste to swathes of Cavendish banana plants across China, Asia and Australia. Recently, scientists ...  Show more

The dodo went extinct in less than 100 years of its discovery, and today is a symbol of extinction by human activity. Owing to its location, very few individual birds were sighted by humans in the 1600s, and most of what we know about the bird comes from description and art. TheP ...  Show more