This month (November 2020), we're theming our shows around movement. From cells moving at one extreme, to planetary movements at the other! And this week we're kick-starting the series by talking animal movement: migration, monitoring, and when to intervene in how animals move. Plus in the news - What do falling levels of coronavirus antibodies in those infected say about the likely success of a vaccine? Why might we want to dose ourselves with vitamin D? And why the Moon's wetter than we first thought! Like this podcast? Please help us by supporting the Naked Scientists