Environment


Wire rope transmission in 1896. Source: Stadtarchiv Schaffhausen.

Kris De Decker at  Low-tech Magazine has published a fascinating article discussing rope drives, a 19th-century technology that was used, especially in Europe, to transmit power over shorter distances. This method of transmission was actually “more efficient than electricity for distances up to 5 kilometres” and even today “would be more efficient than electricity over relatively short distances.”

De Decker makes an interesting connection to the spread of small-scale renewable energy production and suggests a possible role for a technology such as the endless rope drive:

“In spite of [some drawbacks discussed in the article], power transmission by ropes might have a place in our energy systems. Today, there is a trend towards small-scale, decentralized power production, based on renewable energy sources. These solar panels, water turbines or wind turbines generate electricity, but whenever we need to produce mechanical energy, eliminating the step of generating electricity could result in a somewhat less practical, but more efficient use of energy.”

De Decker thinks that “If we used modern materials for making ropes and pulleys, we could further improve this forgotten method.” He illustrates his article with many photos of 19th-century installations.

ARB — 4 April 2013

Advertisements

A very useful presentation on the world energy situation and its connection to economic activity. By Gail Tverberg, a researcher and actuary. Veers unnecessarily into darwinist ideology, but only briefly.

Our Finite World

A friend asked me to put together a presentation on our energy predicament. I am not certain all of the charts in this post will go into it, but I thought others might be interested in a not-so-difficult version of the story of the energy predicament we are reaching.

My friend also asked what characteristics a new fuel would need to have to solve our energy predicament. Because of this, I have included a section at the end on this subject, rather than the traditional, “How do we respond?” section. Given the timing involved, and the combination of limits we are reaching, it is not clear that a fuel suitable for mitigation is really feasible, however.

ENERGY BASICS

Energy makes the world go around

Energy literally makes the world turn on its axis and rotate around the sun.

Energy is what allows us to transform a set of raw materials…

View original post 2,724 more words

Egad! A snowstorm! Maybe global warming isn’t true after all. Oh, wait, it’s March in the Northern Hemisphere, so it’s still cold enough to snow. You almost had me there!

Comic by Slowpoke Comics

ARB — 25 March 2013

I very rarely republish articles from other writers verbatim here, but this piece from Clive Hamilton of Charles Sturt University in Australia makes some very good points about the true roots of the climate-change controversy. I’m not  on board with everything Hamilton advocates here, but I think he makes a useful point about the climate-change controversy — it’s really about political ideology, not about science. He also draws an interesting parallel with the controversy over Einstein’s general theory of relativity when it first came out. So I thought it would be useful to republish the entire article — with permission. This piece comes via The Conversation.

Nature v technology: climate ‘belief’ is politics, not science

By Clive Hamilton

Clive Hamilton

It is hard to imagine a scientific breakthrough more abstract and less politically contentious than Einstein’s general theory of relativity. Yet in Weimar Germany in the 1920s it attracted fierce controversy, with conservatives and ultra-nationalists reading it as a vindication of their opponents – liberals, socialists, pacifists and Jews. They could not separate Einstein’s political views – he was an internationalist and pacifist – from his scientific breakthroughs, and his extraordinary fame made him a prime target in a period of political turmoil.

There was a turning point in 1920. A year earlier a British scientific expedition had used observations of an eclipse to provide empirical confirmation of Einstein’s prediction that light could be bent by the gravitational pull of the Sun. Little known to the general public beforehand, Einstein was instantly elevated to the status of the genius who outshone Galileo and Newton. But conservative newspapers provided an outlet for anti-relativity activists and scientists with an axe to grind, stoking nationalist and anti-Semitic sentiment among those predisposed to it.

In a similar way today, conservative news outlets promote the views of climate deniers and publish stories designed to discredit climate scientists, all with a view to defending an established order seen to be threatened by evidence of a warming globe. As in the Wiemar Republic, the effect has been to fuel suspicion of liberals and “elites” by inviting the public to view science through political lenses.

At the height of the storm in 1920, a bemused Einstein wrote to a friend:

This world is a strange madhouse. Currently, every coachman and every waiter is debating whether relativity theory is correct. Belief in this matter depends on political party affiliation.

The controversy was not confined to Germany. In France a citizen’s attitude to the new theory could be guessed from the stance he or she took on the Dreyfus affair, the scandal surrounding the Jewish army officer falsely convicted of spying in 1894, whose fate divided French society. Anti-Dreyfusards were inclined to reject relativity on political grounds.

In Britain, suspicions were less politically grounded but relativity’s subversion of Newton was a sensitive issue, leading Einstein to write an encomium for the great English scientist prior to a lecture tour.

Like Einstein’s opponents, who denied relativity because of its perceived association with progressive politics, conservative climate deniers follow the maxim that “my enemy’s friend is my enemy”. Scientists whose research strengthens the claims of environmentalism must be opposed.

Conservative climate deniers often link their repudiation of climate science to fears that cultural values are under attack from “liberals” and progressives. In Weimar Germany the threat to the cultural order apparently posed by relativity saw Einstein accused of “scientific dadaism”, after the anarchistic cultural and artistic movement then at its peak. The epithet is revealing because it reflected anxiety that Einstein’s theory would overthrow the established Newtonian understanding of the world, a destabilisation of the physical world that mirrored the subversion of the social order then underway.

Relativity’s apparent repudiation of absolutes was interpreted by some as yet another sign of moral and intellectual decay. There could not have been a worse time for Einstein’s theory to have received such emphatic empirical validation than in the chaotic years after the First World War.

Although not to be overstated, the turmoil of Weimar Germany has some similarities with the political ferment that characterises the United States today – deep-rooted resentments, the sense of a nation in decline, the fragility of liberal forces, and the rise of an angry populist right. Environmental policy and science have become battlegrounds in a deep ideological divide that emerged as a backlash against the gains of the social movements of the 1960s and 1970s.

Marrying science to politics was a calculated strategy of conservative activists in the 1990s, opening up a gulf between Republican and Democratic voters over their attitudes to climate science. Both anti-relativists and climate deniers justifiably feared that science would enhance the standing of their opponents. They responded by tarnishing science with politics.

Einstein’s work was often accused of being un-German, and National Socialist ideology would soon be drawing a distinction between Jewish and Aryan mathematics. Although anti-Semitism plays no part in climate denial, “Jewish mathematics” served the same political function that the charge of “left-wing science” does in the climate debate today.

In the United States, the notion of left-wing science dates to the rise in the 1960s of what has been called “environmental-social impact” science which, at least implicitly, questioned the unalloyed benefits of “technological-production” science. Thus in 1975 Jacob Needleman could write:

Once the hope of mankind, modern science has now become the object of such mistrust and disappointment that it will probably never again speak with its old authority.

The apparent paradox of denialist think tanks supporting geoengineering solutions to the global warming problem that does not exist can be understood as a reassertion of technological-production science over environmental impact science. Thus the Exxon-funded Heartland Institute – the leading denialist organisation that has hosted a series of conferences at which climate science is denounced as a hoax and a communist conspiracy – has enthusiastically endorsed geoengineering as the answer to the problem that does not exist.

The association between “left-wing” opinion and climate science has now been made so strongly that politically conservative scientists who accept the evidence for climate change typically withdraw from public debate. So do those conservative politicians who remain faithful to science.

The motives of Einstein’s opponents were various but differences were overlooked in pursuit of the common foe. Today among the enemies of climate science we find grouped together activists in free market think tanks, politicians pandering to popular fears, conservative media outlets like the Sunday Times and Fox News, a handful of disgruntled scientists, right-wing philanthropists including the Scaifes and Kochs, and sundry opportunists such as Christopher Monckton and Bjorn Lomborg.

While Einstein’s theory posed no economic threat and industrialists were absent from the constellation of anti-relativity forces, the way in which climate denial was initially organised and promoted by fossil fuel interests is now well-documented. In the last several years, climate denial has developed into a political and cultural movement. Beneath the Astroturf grass grew.

This is an edited extract from Earthmasters by Clive Hamilton, published by Allen & Unwin.

Clive Hamilton does not work for, consult to, own shares in or receive funding from any company or organisation that would benefit from this article, and has no relevant affiliations.

The Conversation

This article was originally published at The Conversation.
Read the original article.

ARB — 22 March 2013

I’ve heard a lot of people say that we shouldn’t listen to the “deniers” of man-made global warming, and that the media shouldn’t give them “equal time.” I’m going to step out of line and say I think it’s good to pay attention to the arguments of those who disagree with the consensus view on climate change.

My thinking on this issue has partly arisen while participating in a discussion in the “Green Group” on LinkedIn. (Not sure whether a non-member can view the group and its discussions.) I’m here repeating some of my comments from that discussion.

Science has it own motivation for improving its work, but I think the contrarians, the misinformers, and the misinformed provide added incentive to make the science better. They also add incentive for science communicators and journalists to do a better job communicating with the public about the science and its inferences.

Just a little example from my own work. I’ve heard many of the misinformed raise the objection, How can CO2 as a trace gas cause such a problem? And isn’t CO2 beneficial for plants? I remembered studying this in earth system science, but I didn’t really know how to make the case for it, and I couldn’t find any really accessible article to refer people to. So I did some investigation and wrote an article for it on my own column: “Carbon Dioxide — How Can One Little Molecule Be Such a Big Troublemaker?

The point is that the misinformation gave me an incentive to do a better job of communicating.

ARB — 25 Dec 2012

I’ve discussed this question before over on ThomasNet Green & Clean — see my piece “The Climate Change Controversy — What’s It Really About?

However, I’m meditating on a somewhat different way to articulate it. I should say that I don’t think this controversy is essentially about science. I’m not persuaded by ill-informed or politically motivated assertions, but I don’t use terms like “hoax,” “anti-science,” “pseudo-science,” or “denialism” in connection with the argument.

My current thinking is the following:

The climate change controversy is about a high-stakes struggle between science in the service of eco-socialism and misinformation in the service of free-market fundamentalism.

I’m engaged in an ongoing development of my thinking on this topic and will no doubt circle back to it. But I just wanted to pin down that idea.

ARB — 2 Nov. 2012

Power plant in FinlandRecently I’ve been writing a series of columns on climate change over at ThomasNet Green & Clean. Although I do talk about the scientific arguments around human-caused global warming, I’m also interested in this issue as a social controversy, that is, what is it that drives people to one side or the other of the question? (Photo: Power plant, Finland. Credit:eutrophication&hypoxiaCC BY 2.0)

Here are links to each of the articles up to now:

Does the Public Really Believe Humans Are Causing Climate Change?

All This Wrangling Over Climate Change – What’s Up With That?

The Climate Change Controversy – What’s It Really About?

So, Have They Figured Out That Global Warming Is Real?

ARB — 19 Dec. 2011

Next Page »