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Each week we hear from a leading voice on the critical environmental challenge facing our planet - climate change.

Calls to address methane emissions, have long been made by leading expert on global climate change, Professor Peter Thorne. Professor of Geography at Maynooth University.

There is great excitement now with the news that the first confirmed NEW INSECT ORDER in 100 years has been discovered in Britain.

It was Andrew Salisbury, Principal Entomologist at the Royal Horticultural Society who identified a strange new colony at the RHS garden at Wisley in Surrey. He spoke Derek and Richard.

The National Biodiversity Data Centre, along with the Centre for Environmental Data & Recording for Northern Ireland, recently launched an all-Ireland survey of dragonflies and damselflies. It’s the first such survey in almost 20 years, it’s being run by Dave Wall from the Biodiversity Data Centre, and he joined Derek from our Belfast studio.

James Nelson (one of the Celtic Tenors) reviews the documentary "Pavarotti"

Peter Murphy reviews "Call Him Mine" by Tim MacGabhann (published by Weidenfeld & Nicholson)

Enda Walsh and Jim Culleton remember the theatre-maker Karl Shiels

Hugh Cahill and Alan Cawley are joined by Brian Carroll and Conor Mortimer look back on the weekend's GAA action

Hugh Cahill is joined by Alan Cawley, Brian Carroll and Conor Mortimer

Marie Crowe presents as Sligo Rovers treasurer David Rowe discusses the meeting of all 20 LOI clubs with the FAI and says that unity is emerging.

Stephen Rice, Fabio O'Brien and James O'Toole join us in studio.

Dozens of people made their way to a pier at Knockferry on the shores of Lough Corrib in County Galway on Saturday for the launch of a replica 2,400-year-old log boat. Lorna Siggins went along to find out what happened!