Pi

Misha Glenny and guests discuss one of the wonders of the natural world. In 1875 in the western Pacific, the crew of HMS Challenger discovered the Mariana Trench which turned out to be deeper than Everest is high, by two kilometres. Trenches like Mariana form when one tectonic pl ...  Show more

Melvyn Bragg and guests discuss the evolution of lungs and of the first breaths, which can be traced back 400 million years to when animal life spread from rock pools and swamps onto land, as some fish found an evolutionary advantage in getting their oxygen from air rather than w ...  Show more

Pi is the ratio between a circle’s diameter and its circumference. Sounds dull – but pi turns out to have astonishing properties and crop up in places you would never expect. For a start, it goes on forever and never repeats, meaning it probably contains your name, date of birth, ...  Show more

Pi itself is pretty ridiculous. This number -- the ratio of the circumference of any circle to the diameter of that circle -- appears to continue into infinity, with no predictable pattern. In today's episode, Ben, Noel and Max explore something even more ridiculous: that time in ...  Show more

Mathematics—the language of the universe, woven into the fabric of history and discovery. From ancient civilizations counting on clay tablets to the groundbreaking theories that shaped our modern world, the story of math is one of curiosity, logic, and human ingenuity. Who were t ...  Show more

Pythagoras and mathematics in ancient philosophy