The decision to end Radio 4's Home Planet has dismayed many listeners. The programme has been answering listeners' environmental science questions for the last 10 years. This week two listeners meet commissioning editor Mohit Bakaya to ask - what on earth is going on? They also talk to the newly appointed science editor David Shukman about his plans for science on BBC radio.

And Happy 70th Birthday Desert Island Discs. Executive producer Cathy Drysdale tells Roger how this weekend - each BBC local radio station as well as BBC Scotland, Northern Ireland and Wales are running special programmes dedicated to the music choices and personal stories of hundreds of listeners.

We also hear your reactions to news that the BBC Trust has ordered BBC managers to rethink cuts to local radio budgets.

Presenter: Roger Bolton

Producers: Karen Pirie and Kate Taylor