Mark Hanna

Guest writer

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The brutal truth about police dogs

Police attack dogs cause worryingly high rates of injury, newly released data shows.

By Mark Hanna | 10th March, 2021

The mysterious case of the $1.50 a year power bill

The mysterious case of the $1.50 a year power bill

Could it really cost less than a cup of coffee to power your home for an entire year? Mark Hanna investigates the New Zealand Herald's extraordinary claim.

By Mark Hanna | 25th July, 2018

Photo: RNZ / Richard Tindiller

We must stop ignoring the experts on police pursuits

People keep dying in police pursuits. Despite this repeated cycle of calls for change, has anything actually changed?

By Mark Hanna | 30th May, 2018

Back view of woman against sun burns on her back.

About that Stuff story on ‘edible sunblock’

In any country, Stuff's news story assessing 'edible sunscreen' would be questionable. In New Zealand, the melanoma capital of the world, it's downright irresponsible, writes Mark Hanna.

By Mark Hanna | 5th October, 2017

Tracy Cox color illustration of a “snake oil” salesman who opens his jacket to reveal an assortment of quack medical cures, pills, tonics, tools, etc. (Bay Area News Group/MCT via Getty Images)

Why Winston Peters is wrong about the anti-quackery bill

We need a new law to plug the big gap in our regulation of health products, argues Mark Hanna

By Mark Hanna | 19th May, 2017

A LINE OF DRINKS THAT CONTAIN SUGAR. PHOTO: GETTY

Hoo boy, soft drink companies did some really bad science today

Mark Hanna's greatest passion is debunking bad science. Here, he looks at the New Zealand Beverage Council's recent media campaign claiming soft drinks aren't a big factor in obesity.

By Mark Hanna | 3rd November, 2016