Glasgow: Our Last Best Hope Radio 4, 11am

What will it take to make a success of the climatechange summit, set to begin in

Glasgow on

October 31? Douglas

Alexander (right) tries to answer that question by speaking to such international figures as John Kerry, Christiana Figueres, Mark Carney and Alok Sharma, as well as a variety of local residents.

Coverage begins of this year’s NI Opera Festival Of Voice in Radio 3 Lunchtime Concert (Radio 3, 1pm), which includes a world premiere by Belfast-born composer Elaine Agnew.

One To One (Radio 4, 9.30am) features a conversation between Janet Ellis and her daughter Sophie Ellis-Bextor.