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
The Evolution of Lungs
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
Izzie and Dr Becky complete their tour of the solar system with a trip to Mercury, the space spirograph (copyright: Dr Becky). Join them as they explore what we know about the planet so far and what ESA's current mission, BepiColombo, is hoping to find. Plus, Dr Robert Massey is ...Show more
Astronomy Cast Ep. 627: Mercury Revisited by Fraser Cain & Dr. Pamela Gay It's been about a thousand years since since we last looked at Mercury. So we figured it's time for an update. What new things have we learned about Mercury? Or even new questions! Fortunately there's a mis ...Show more
Melvyn Bragg and guests discuss the planet Venus which is both the morning star and the evening star, rotates backwards at walking speed and has a day which is longer than its year. It has long been called Earth’s twin, yet the differences are more striking than the similarities. ...Show more
Joe and Fergus chat about all things mercury and find that there's much more to it than just thermometers! It's been used since ancient times - some thought it was the key to eternal life, despite its poisonous nature. Find out more in this week's episode.