Sex-reversing frogs, and Europe’s rising rates of a deadly tick-borne disease

Sarah Crespi and Richard Stone discuss the spread of disease-carrying Hyalomma ticks as the climate changes, drawing on reporting from Kosovo and the role of surveillance. Evolutionary ecologist Veronika Bókony then explains research on agile frogs whose development changes with temperature, including the reproductive consequences for genetically female frogs that develop male traits. The episode connects climate, disease ecology and amphibian reproduction. The publisher supplies a transcript and external audio.