A carbon tax may not actually do a whole lot for emissions

There's a chicken/egg problem at work.

A carbon tax is most economists' favourite method of dealing with climate change. It is exactly the sort of simple, market-driven intervention that they tend to like: set a price per tonne of carbon emitted which is equal to the value of the damage that tonne does to the climate, and then sit back and what businesses and consumers react. Some may cut their usage; some may switch to low-carbon sources of energy, which suddenly become cheaper comparatively; and some may choose to just pay the extra cost (what happens in that last situation is debatable – some think the money should just count as general taxation, others that it should be put towards climate change prevention and mitigation).

The Washington Post's Brad Plumer suggests that it may not work as well as we would hope, however. He reports on a recent MIT study looking at the likely effect of a $20 a ton carbon tax in the real world – the value proposed by a pair of MIT researchers last month.

Plumer writes:

Sebastian Rausch and John M. Reilly of the MIT Global Change Institute recently put forward a proposal for a $20/ton carbon tax that would rise 4 percent each year, starting in 2013. (The funds would be used to offset taxes elsewhere.) Here’s what their economic model predicts would happen to U.S. greenhouse-gas emissions:

Blue line: MIT reference case with no carbon tax. Black line: EIA reference. Green line: Scenario with MIT carbon tax in place.

With a carbon tax in place, U.S. greenhouse gas emissions do start declining quite a bit (this is the green line). But by 2030, emission levels stall, even though the carbon tax keeps rising and rising each year. The United States wouldn’t get anywhere near the 80 percent cut by 2050 that the White House has envisioned.

One explanation here is that MIT’s proposed carbon tax just isn’t high enough. But Muro favors another possibility–that a carbon tax alone isn’t enough to drive deep reductions. The private sector tends to under-invest in energy R&D and key bits of infrastructure such as transmission lines. Without further policies, it’s unlikely that we’ll see a sweeping transformation of our energy system to give people alternatives to coal plants and gasoline-powered cars.

This echoes an argument I've heard several times from those on the more technical side of climate change prevention. For all that the economists and politicians like to talk about creating the conditions in which the private sector will be incentivised to help tackle climate change, those who are more keenly aware of the massive costs involved tend to be rather more pessimistic.

They point out that the carbon tax model provides a cash injection to providers of low-carbon energy – but only after the tax is already instituted. As a result, there's another weak link in the chain, which is the ability of those providers to secure loans to build the capacity required. That's possible for massive companies looking to get into a new area; and it's possible for smaller companies, provided they get enough certainty from the government to be able to convince bankers.

But the fear is that larger companies, already strongly embedded in the conventional energy infrastructure, have little incentive to devote money, which could be used to lower the cost of polluting fuels, to instead build new capacity; and smaller companies won't be left with enough time between when the government finally confirms a carbon tax, and when their new generation is actually needed.

At the same time, though, there is growing evidence that some companies really are going above and beyond the call of duty. Some of it may be greenwashing, and some may be token expenditure, but if there really is any sizeable investment in low-carbon infrastructure, then it makes a carbon tax that much more effective.

Carbon taxes can only lower emissions if they raise the price of polluting relative to an alternative. If that alternative isn't available, then they risk being simply another source of revenue for the state.

Wind turbines being prepared. Photograph: Getty Images

Alex Hern is a technology reporter for the Guardian. He was formerly staff writer at the New Statesman. You should follow Alex on Twitter.

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Love a good box set? Then you should watch the Snooker World Championships

The game relies on a steady arm, which relies on a steady nerve. The result is a slow creeping tension needs time and space to be properly enjoyed and endured. 

People are lazy and people are impatient. This has always been so – just ask Moses or his rock – but as illustrated by kindly old Yahweh, in those days they could not simply answer those impulses and stroll on.

Nowadays, that is no longer so. Twitter, YouTube and listicles reflect a desire for complex and involved issues, expansive and nuanced sports – what we might term quality – to be condensed into easily digestible morsels for effort-free enjoyment.

There is, though, one notable exception to this trend: the box set. Pursuing a novelistic, literary sensibility, it credits its audience with the power of sentience and tells riveting stories slowly, unfolding things in whichever manner that it is best for them to unfold.

In the first episode of the first series of The Sopranos, we hear Tony demean his wife Carmela's irritation with him via the phrase “always with the drama”; in the seventh episode of the first series we see his mother do likewise to his father; and in the 21st and final episode of the sixth and final series, his son uses it on Carmela. It is precisely this richness and this care that makes The Sopranos not only the finest TV show ever made, but the finest artefact that contemporary society has to offer. It forces us to think, try and feel.

We have two principal methods of consuming art of this ilk - weekly episode, or week-long binge. The former allows for anticipation and contemplation, worthy pursuits both, but of an entirely different order to the immersion and obsession offered by the latter. Who, when watching the Wire, didn’t find themselves agreeing that trudat, it's time to reup the dishwasher salt, but we’ve run out, ain’t no thing. Losing yourself in another world is rare, likewise excitement at where your mind is going next.

In a sporting context, this can only be achieved via World Championship snooker. Because snooker is a simple, repetitive game, it is absorbing very quickly, its run of play faithfully reflected by the score.

But the Worlds are special. The first round is played over ten frames – as many as the final in the next most prestigious competition – and rather than the usual week, it lasts for 17 magical days, from morning until night. This bestows upon us the opportunity to, figuratively at least, put away our lives and concentrate. Of course, work and family still exist, but only in the context of the snooker and without anything like the same intensity. There is no joy on earth like watching the BBC’s shot of the championship compilation to discover that not only did you see most of them live, but that you have successfully predicted the shortlist.

It is true that people competing at anything provides compelling drama, emotion, pathos and bathos - the Olympics proves this every four years. But there is something uniquely nourishing about longform snooker, which is why it has sustained for decades without significant alteration.

The game relies on a steady arm, which relies on a steady nerve. The result is a slow creeping tension needs time and space to be properly enjoyed and endured. Most frequently, snooker is grouped with darts as a non-athletic sport, instead testing fine motor skills and the ability to calculate angles, velocity and forthcoming shots. However, its tempo and depth is more similar to Test cricket – except snooker trusts so much in its magnificence that it refuses to compromise the values which underpin it.

Alfred Hitchcock once explained that if two people are talking and a bomb explodes without warning, it constitutes surprise; but if two people are talking and all the while a ticking bomb is visible under the table, it constitutes suspense. “In these conditions,” he said, “The same innocuous conversation becomes fascinating because the public is participating in the scene. The audience is longing to warn the characters on the screen: ‘You shouldn't be talking about such trivial matters. There is a bomb beneath you and it is about to explode!’”

Such is snooker. In more or less every break, there will at some point be at least one difficult shot, loss of position or bad contact – and there will always be pressure. Add to that the broken flow of things – time spent waiting for the balls to stop, time spent prowling around the table, time spent sizing up the table, time spent cleaning the white, time spent waiting for a turn – and the ability for things to go wrong is constantly in contemplation.

All the more so in Sheffield’s Crucible Theatre. This venue, in its 40th year of hosting the competition, is elemental to its success. Place is crucial to storytelling, and even the word “Crucible” – whether “a ceramic or metal container in which metals or other substances may be melted or subjected to very high temperatures,” “a situation of severe trial”, or Arthur Miller’s searing play – conjures images of destruction, injustice and nakedness. And the actual Crucible is perhaps the most atmospheric arena in sport - intimate, quiet, and home to a legendarily knowledgeable audience, able to calculate when a player has secured a frame simply by listening to commentary through an earpiece and applauding as soon as the information is communicated to them.

To temper the stress, snooker is also something incredibly comforting. This is partly rooted in its scheduling. Working day and late-night sport is illicit and conspiratorial, while its presence in revision season has entire cohorts committing to “just one more quick frame”, and “just one more quick spliff”. But most powerfully of all, world championship snooker triggers memory and nostalgia, a rare example of something that hasn’t changed, as captivating now as it was in childhood.

This wistfulness is complemented by sensory pleasure of the lushest order. The colours of both baize and balls are the brightest, most engaging iterations imaginable, while the click of cue on ball, the clunk of ball on ball and the clack of ball on pocket is deep and musical; omnipresent and predictable, they combine for a soundtrack that one might play to a baby in the womb, instead of whale music or Megadeth.

Repeating rhythms are also set by the commentators, former players of many years standing. As is natural with extended coverage of repetitive-action games, there are numerous phrases that recur:

“We all love these tactical frames, but the players are so good nowadays that one mistake and your opponent’s in, so here he is, looking to win the frame at one visit ... and it’s there, right in the heart of the pocket for frame and match! But where’s the cue ball going! it really is amazing what can happen in the game of snooker, especially when we’re down to this one-table situation.”

But as omniscient narrators, the same men also provide actual insight, alerting us to options and eventualities of which we would otherwise be ignorant. Snooker is a simple game but geometry and physics are complicated, so an expert eye is required to explain them intelligibly; it is done with a winning combination of levity and sincerity.

The only essential way in which snooker is different is the standard of play. The first round of this year’s draw featured eight past winners, only two of whom have made it to the last four, and there were three second-round games that were plausible finals.

And just as literary fiction is as much about character as plot, so too is snooker. Nothing makes you feel you know someone like studying them over years at moments of elation and desolation, pressure and release, punctuated by TV confessions of guilty pleasures, such as foot massages, and bucket list contents, such as naked bungee jumping.

It is probably true that there are not as many “characters” in the game as once there were, but there are just as many characters, all of whom are part of that tradition. And because players play throughout their adult life, able to establish their personalities, in unforgiving close-up, over a number of years, they need not be bombastic to tell compelling stories, growing and undergoing change in the same way as Dorothea Brooke or Paulie Gualtieri.

Of no one is this more evident that Ding Junhui, runner-up last year and current semi-finalist this; though he is only 30, we have been watching him almost half his life. In 2007, he reached the final of the Masters tournament, in which he faced Ronnie O’Sullivan, the most naturally talented player ever to pick up a cue – TMNTPETPUAC for short. The crowd were, to be charitable, being boisterous, and to be honest, being pricks, and at the same time, O’Sullivan was playing monumentally well. So at the mid-session interval, Ding left the arena in tears and O’Sullivan took his arm in consolation; then when Ding beat O’Sullivan in this year’s quarter-final, he rested his head on O’Sullivan’s shoulder and exchanged words of encouragement for words of respect. It was beautiful, it was particular, and it was snooker.

Currently, Ding trails Mark Selby, the “Jester from Leicester” – a lucky escape, considering other rhyming nouns - in their best of 33 encounter. Given a champion poised to move from defending to dominant, the likelihood is that Ding will remain the best player never to win the game’s biggest prize for another year.

Meanwhile, the other semi-final pits Barry Hawkins, a finalist in 2013, against John Higgins, an undisputed great and three-time champion. Higgins looks likely to progress, and though whoever wins through will be an outsider, both are eminently capable of taking the title. Which is to say that, this weekend, Planet Earth has no entertainment more thrilling, challenging and enriching than events at the Crucible Theatre, Sheffield.

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