Tagged: geothermal

Magma power: how superheated molten rock could provide renewable energy - Guest Work

Guest Author Oct 30, 2016

By Pete Rowley, University of Portsmouth Iceland is about to tap into water as hot as lava. Several kilometres below ground, a drilling rig named Thor will soon penetrate the area around a magma chamber, where molten rock from the inner Earth heats up water that has seeped through the seafloor. This water – up to 1,000°C and … Read More

Seven keys to green growth in NZ: Pure Advantage’s new economic analysis - Hot Topic

Gareth Renowden Nov 17, 2012

Last week business lobby group Pure Advantage launched [Herald, Stuff] a specially commissioned report, Green Growth: Opportunities for New Zealand, which presents, they say, “an exhaustive, objective economic argument for embracing green growth”. The report was produced by a London-based economics consultancy in conjunction with the University of Auckland Business School, and is the culmination [...] … Read More

The Climate Show #23: Durban and the return of the electric car - Hot Topic

Gareth Renowden Dec 21, 2011

Grab some holly, deck your halls, heat up some mince pies, and then settle down to the last Climate Show of 2011. We look at the outcome of the Durban conference, discuss heavy rain in New Zealand and record-breaking weather extremes in the USA, and ponder the implications of news of more methane erupting from [...] … Read More

Alley’s documentary: upbeat and optimistic - Hot Topic

Bryan Walker Apr 18, 2011

Richard Alley’s book Earth: The Operators’ Manual, which I reviewed recently, was written as a companion to a PBS documentary of the same name. The documentary has recently screened in the US and is now available for viewing here. The broad themes are the same as those of the book. They’re not complicated: taking our [...] … Read More

Here comes the sun: 100% renewables by 2050 - Hot Topic

Bryan Walker Feb 07, 2011

Is a fully sustainable global energy system possible by 2050? It’s hard to imagine a more important question if we entertain hopes of avoiding the worst effects of climate change. It is the question addressed by a new and substantial report from the World Wide Fund for Nature (WWF) and the sustainable energy research and [...] … Read More

Renewable Energy: The Facts - Hot Topic

Bryan Walker Dec 14, 2010

Germany is a country which has attracted much attention for taking renewable energy technology seriously, not least because it has gained significant economic advantage in doing so. That lends interest to the publication of an English translation of the book, Renewable Energy: The Facts, by German writers Dieter Seifried and Walter Witzel. The authors write [...] … Read More

Ramping up renewables - Hot Topic

Bryan Walker Aug 26, 2010

There may be conflicting reports as to whether renewable energy can replace fossil fuels in time to significantly reduce carbon dioxide emissions, and there are still plenty of people in positions of authority, like our own Energy Minister, who see little reason to hurry the process. The heavy lobbying influence of big oil and coal [...] … Read More

Brownlee’s energy strategy: dig and burn - Hot Topic

Bryan Walker Jul 26, 2010

The newly released Draft NZ Energy Strategy (PDF, web) is a winding back of the clock from the substantial statement released under the previous government only three years ago. When announcing early in his term as Minister that a new strategy was required Gerry Brownlee complained of the old one: “You need only read the [...] … Read More

Plan B (not from outer space) - Hot Topic

Bryan Walker Oct 12, 2009

I hadn’t expected to be doing a Hot Topic review of Lester Brown’s book Plan B 4.0: Mobilizing to Save Civilization, since he writes about a variety of sustainability issues. However the 90 pages or so he devotes to climate change were irresistible for their sensible optimism and I report them here. The Plan B books have [...] … Read More