Nine To Noon for Tuesday 24 November 2015

09:05 The on-line fight against Islamic State

Hactivist group, Ghost Security has changed the way it works, and is now linked up with US counter terrorism officials. It identifies and reports on Islamic State's activities, working with US government counter terrorism advisor, Michael Smith - from defense consulting firm Kronos Advisory.

09:20 Chris Cairns trial wraps up

After nearly two months, the Chris Cairns perjury trial is entering its final stages, with the judge summing up. Cairns has been accused of lying under oath, after saying in court he had "never" cheated at cricket. He and his former lawyer, Andrew Fitch-Holland are charged with attempting to pervert the course of justice.Justice Sweeney has outlined the evidence to the jury, and also warned them to be "particularly cautious"  of the evidence of Lou Vincent.Fairfax sports report, Kevin Norquay has been covering the trial in London.

09:30 Do self affirmations work?

A slew of new-age and self-help books recommend doing self affirmations - positive messages about self worth - but do they work? A new study shows they can and are most effective when they are about something important to you - and when they are focussed on the future. Psychologist Chris Cascio is the University of Pennsylvania psychologist who with his colleagues, put the anecdotal evidence they were getting of how beneficial affirmations are, to the test.

09:45  US correspondent, Steve Almond

10:05  The Great Barrier Reef: A human history

The Great Barrier Reef, according to Sydney University historian Iain McCalman, is so vast the only people able to fully grasp its scale are astronauts. The reef's network of hundreds of islands and individual reefs stretches more than two thousand  kilometers from its northern tip in the Torres Straight almost halfway down the eastern coast of Australia.

Iain McCalman is visiting New Zealand as a guest of the Royal Society for a series of lectures

Today when people think of the reef they think of a fragile natural wonder but in the past people have had a very different perspectives. To Captain Cook it was a "nightmare labyrinth" which very nearly spelled doom for his voyage of exploration. To the aboriginal people islands on the reef were home, and the reef itself a vital source of food. And in the fevered imaginations of europeans it was terra incognita -  a place filled with fearsome cannibalistic tribes, shipwrecks and astounding tales of survival.

10:30  Book Review: Wildflower by Drew Barrymore

Reviewed by Gina Rogers, published by Virgin Books

10:45  The Reading: An Awfully Big Adventure by Jane Tolerton

New Zealand Works War One veterans tell their stories (Part 12 of 15)

11:05  Business commentator Rod Oram

11:20 "Neurotribes" & the changing attitudes to autism

Steve Silberman is an American journalist who writes about technology for Wired magazine and the New Yorker. His new book 'Neurotribes' is the first popular science book to win the Samuel Johnson prize, Britain's leading literary award for nonfiction. It charts the evolution of the diagnosis in 1943 to the current campaign to reframe the condition.

Fifteen years ago, Steve Silberman himself, broke the story of Silicon Valley's autism 'epidemic', he saw it as a problem. Now he's changed his mind..

11:45 Media commentator, Gavin Ellis

Gavin Ellis is a media commentator and former editor of the New Zealand Herald. He can be contacted on gavin.ellis@xtra.co.nz

Music played in this show

Artist:   The Chills
Song: Heavenly Pop Hit
Composer: Phillipps
Label: Flying Nun
Time: 10:10

Artist:   Avalanche City
Song: Ends in the Ocean
Composer: Baxter
Album: Our New Life Above the Ground
Label: Warner
Time: 10:40

Artist:   Mark Knopfler
Song: Beryl
Composer:Knopfler
Album: Tracker
Label: Universal
Time: 11:40