Tension Over the Border with Northern Ireland Post-Brexit

A row has intensified about how to avoid a hard border between Northern Ireland and the Irish republic after Brexit. Also on the programme: Scientists step in as environmental matchmakers by breeding baby coral, and ash spews from Bali's Mount Agung volcano disrupting international flights.

(Photo: Cars cross the border between Ireland and Northern Ireland, in Donegal. Credit: Paul Faith/AFP/Getty Images)