09:05 Hello Earth - can you hear me?

The European Space Agency says its comet lander spacecraft, Philae, has woken up and contacted Earth. Philae became the first spacecraft to land on a comet when it was dropped on to the surface of one by its mothership, Rosetta, last November. It worked for 60 hours before its solar-powered battery ran flat. The comet has since moved nearer to the sun, and Philae now has enough power to work again. Matt Taylor is project scientist with the European Space Agency.

09:20 Social Bonds - can private investment in welfare work?

The Government says social bonds - which are set to be trialled in the mental health sector here -  are an innovative way to pay for social services that deliver results while critics say they are a massive experiment. The idea behind social bonds is for the private sector to invest in  particular outcomes such as improved employment rates or reduced re-offending by people coming out of prison. If the agreed outcome is not reached, the investor doesn't get paid, thus - the Government says - there is a very big incentive to make the programme work. Paul Riley is the executive director of Key Assets UK - part of a global company which specialises in placing foster children in homes and other social and family services.

09:45 US Correspondent Susan Milligan

Susan Milligan is a contributing editor to US News and World Report. She also writes for The Washingtonian, Rhode Island Monthly, AARP Bulletin, eJournal and other publications. She teaches a course in Government and the Media to Boston University students at the Washington DC Campus. She is a former White House and National Political Correspondent for the Boston Globe.

10:05 Social nudity           

Time to get back to basics, and step into the intriguing world of social nudity. So why do people become nudists? And what sort of lives do they lead? Journalist, Mark Haskell Smith is the author of Naked at Lunch: A Reluctant Nudist's Adventures in the Clothing-Optional World.

10:30 Book Review: Stalin's Daughter

Reviewed by Jane Westaway

Stalin's Daughter: The Extraordinary And Tumultuous Life of Svetlana Alliluyeva by Rosemary Sullivan
Published by HarperCollins Publishers UK, RRP$34.99

10:45 The Reading: 'Undercover Mumbai', by Ayeesha Menon

Inspector Alia Khan, a young detective in the Mumbai Police Force, faces many obstacles as she attempts to solve a series of crimes, make sense of her troubled past and cope with being a woman in a chauvinistic, male-dominated police force (7 of 9, Goldhawk) Note: audio is not available for this programme.

11:05 Business commentator Rod Oram

Rod Oram discusses NXT, the new small companies market the NZX is launching on Thursday; and the prospect of competition for Air New Zealand from Qantas / American Airlines trans-Pacific.

11:30 Award-winning editorial writing from the Northland Age

Peter Jackson is the editor and sole news reporter at the Northland Age, which publishes twice-weekly, and has a circulation of 4200 in the Far North. His four decade commitment to community news gathering in the Far North has resulted in the editor of a Kaitaia-based newspaper taking out a top gong this year's Canon Media Awards. His services to journalism were recognised in 2011 when he received the Insignia of a member of the New Zealand Order of Merit. Peter Jackson was named Editorial Writer of the Year, beating off competition from the Dominion Post, The Herald on Sunday/Sunday Star-Times and Metro. He's humbled by the award which he says shows there's still a place for good old fashioned journalism.

11:45 Media commentator, Gavin Ellis

Gavin Ellis discusses TV3's new current affairs programme, 3D Investigates, and asks if the end is nigh for sub-editing in New Zealand. Gavin Ellis is a media commentator and former editor of the New Zealand Herald.  He can be contacted on gavin.ellis@xtra.co.nz