Gareth Renowden

Gareth Renowden (MA Oxon) is the author of the award-winning The Truffle Book (Limestone Hills 2005), The Olive Book (Canterbury University Press 1999) and Video – The Inside Story (Collins (UK) 1983). He has written for and worked on a wide variety of magazines and newspapers in Britain, NZ and the US. He is trying to grow truffles, olives and grapes on a small farm in North Canterbury, and is immediate past president of the NZ Truffle Association. He is a member of the committee of the NZ Meteorological Society, deputy chair of the North Canterbury Radio Trust, and a founder member of the Waipara River Protection Group. Gareth is on Twotter @grenow

NZ’s Paris emissions commitments should be 40% by 2030 and 100% (or more) by 2050 - Hot Topic

Jun 08, 2015

Submissions for the New Zealand government’s half-hearted consultation on post-2020 emissions targets closed last Wednesday. I managed to sneak my contribution in just before the 5pm deadline. It remains to be seen whether it will be read. I heartily recommend reading the Royal Society’s submission – a very clear statement of the issues and NZ’s […]

It’s deja vu all over again: NZ consultation on climate target set up to be a farce - Hot Topic

May 26, 2015

At the end of last week, with the deadline1 for submissions on a post-2020 target for New Zealand emissions rapidly approaching, the Ministry for the Environment released a second set of economic cost estimates for various emissions targets. These cost estimates are substantially lower, the Ministry admits, than the costs in the consultation document issued […]

Milk cow blues: dirty dairy costs NZ dear, but methane cuts might work - Hot Topic

Apr 30, 2015

There’s good news and bad news for New Zealand’s dairy industry this week. On the one hand, research has found a number of compounds that can cut methane emissions from ruminants (cows and sheep) by up to 90% by reducing populations of the bacteria that produce the gas. On the other hand, research into the […]

Climate battle at NBR: Rodney’s rubbish versus Wiggs wisdom - Hot Topic

Apr 26, 2015

New Zealand’s leading business media outfit — the National Business Review — has long dallied with climate denial, providing a platform for former ACT party leader Rodney Hide (amongst others) to push climate tosh. Last week Rodney used his regular opinion column to attack the government’s emissions policies (behind paywall) — fair enough, given that […]

High Water – NZ climate comic anthology - Hot Topic

Apr 16, 2015

Scientists investigate how climate changes, politicians (should) decide what to do about it. Tough jobs. Artists have just as difficult a job: to comment on the reality and unreality they see in society’s responses to the climate threat, and by doing so motivate us to create a liveable future. In High Water, a new anthology […]

Totten hots up, ice shelves melting: it’s grim down south - Hot Topic

Mar 30, 2015

Much news in recent weeks from Antarctica, and none of it good. An Argentinian base on the tip of the Antarctic Peninsula recently reported a new high temperature record for the continent — 17.5ºC. A team of scientists has discovered that East Antarctica’s Totten Glacier — which drains a catchment that contains enough ice to […]

Leyland and Carter: the rebuttal that isn’t and the hypocrisy that is - Hot Topic

Mar 25, 2015

Sciblogs editor Peter Griffin recently gave climate denial activists Bryan Leyland and Bob Carter a “right of reply” to my post pointing out the errors and inconsistencies in a Dominion Post op-ed penned by the pair. Griffin took this action because of vociferous complaints from Leyland, who took offence at my discussion of his expertise […]

DomPost denier debacle: science has the last word - Hot Topic

Mar 10, 2015

The Dominion Post, which blotted its editorial copybook last week by publishing a factually incorrect and highly misleading opinion piece by climate denialists, has today published a heavyweight reply by three of NZ’s top climate scientists — David Wratt, Andy Reisinger and Jim Renwick1. Headed “Human role in climate change is clear”, the article is […]