09:05 Police hunting gunman in Central North Island. Schools in lockdown.

Blair Dravitski is the principal of Ohakune school, which is in lockdown as a result of the police hunt for a gunman who fired shots at police; and Kim Basse, is the principal of Ruapehu College also in lockdown.

09:20 Does Government-owned Landcorp need to sell land to remain viable?

The former head of the State Owned farming company Landcorp is rejecting any comparison of the company to the failed Solid Energy. Bill English yesterday indicated the government is concerned at Landcorp's debt levels, and said it may need to sell some of its non-core assets. Landcorp owns 122 farms totalling 376 thousand hectares around the country. The spotlight has come onto the company following Solid Energy's move into voluntary administration last week, and recent comments by Mr English about the vulnerability of other SOE's, including TVNZ, New Zealand Post, Kiwi Rail, The Public Trust, and Kordia.

Chris Kelly is a former CEO of Landcorp, now Chancellor of Massey University and director of a number of agriculture-related businesses.

09:30 Robot creating engineer wins a top tertiary teaching award

Dale Carnegie is the head of Victoria University's School of Engineering and Computer Science. He was last week given the 2015 Ako Aotearoa Tertiary Teaching Excellence award for his engaging teaching style and what students described as "infectious enthusiasm". Professor Carnegie has long promoted engineering as a career, he is currently working on a robot prototype for use in search and rescue due to its ability to move over difficult terrain.

09:45 Australia correspondent Bernard Keane

10:05 Geologist Stefan Kropelin - The Sahara Desert

The Sahara Desert is a place where entire villages can be swallowed whole by sandstorms, where temperatures can swing as high as 58 degrees in the day and plunge below freezing point at night. Its borders encompass some of the most politically unstable countries in the world, parts are even rumored to host ISIS training camps. But 6000 years ago the Sahara was a lush savannah, covered in grasslands, forests and home to one of the largest rivers in the world. So why did it change? Geologist Stefan Kropelin has dedicated his career to answering that question.

10:25 Book review: The Land Ballot

Reviewed by Harry Ricketts.

Fleur Adcock's latest collection of poems, The Land Ballot exploring her ancestors and their early experiences in New Zealand.

10:45 The Reading: 'Gutter Black' by Dave McArtney

Highlights from the intimate memoir by the late Dave McArtney, a founding member of one of NZ's iconic rock bands, 'Hello Sailor' recalling their days of creativity, misadventure, success and excess. Read by Karyn Hay. (6 of 6, RNZ)

11:05 Central North Island armed manhunt

Renee Clayton is a reporter with the Manawatu Guardian.

11:10 Marty Duda's artist of the week - Grace Potter

Grace Potter, along with her band, The Nocturnals, has been making a name for herself on the American Jam Band circuit, since she and the band joined forces in 2002. Grace has proven to be an incredibly talented musician who plays a mean electric guitar, Wurlitzer organ and sings with the passion of a young Janis Joplin. After recording four albums with The Nocturnals, Grace Potter has just released a solo record titled Midnight that finds her testing the waters in the pop market. Members of The Nocturnals can be heard on the album and they are still touring together, but long time fans are undecided about Grace’s new sound.

11:30 Law Commissioner Peter Boshier

Peter Boshier on how the law commission works.

11:45 Science commentator Michelle Dickinson

The warmest ever superconductor; how mussels cement themselves to rocks; and how playing the computer game Tetris can block cravings.

Music details

Artist: Naomi Shelton and Gospel Queens
Song: Bound for the Promised Land
Composer: Shelton
Album: Cold World
Label: Daptone Records
Time: 0938

Music played in this show

Marty Duda's Artist of the Week - Grace Potter

Artist: Grace Potter & The Nocturnals
Song: Toothbrush And My Table (4:29)
Composer: Matt Burr-Grace Potter
Album: Nothing But The Water (2005)
Label: Hollywood

Artist: Grace Potter & The Nocturnals
Song: Paris (Ooh La La) (3:15)
Composer: Grace Potter
Album: Grace Potter & The Nocturnals (2010)
Label: Hollywood

Artist: Grace Potter & The Nocturnals
Song: Never Go Back (3:40)
Composer: Dan Auerbach-Matt Burr-Grace Potter-Scott Tournet-Ben Yurco
Album: The Lion The Beast The Beat (2012)
Label: Hollywood

Artist: Grace Potter
Song: Alive Tonight (2:56)
Album: Midnight (2015)
Label: Hollywood