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Bishop Hill has a review of Tim Worstall's book Chasing Rainbows, which reminds me that I meant to write about this book. I wrote a cover quote for it that described it `fearless, fresh, forensic and funny'.

What is particularly clever about the book is the way that Worstall makes economic theory so digestible, even delicious. He refutes the dreary cliche so popular among environmentalists that economics just `does not get' the environment (by which they usually mean that they would like to do the equivalent of repeal the laws of gravity and make things to happen even if they make no sense for people: like getting people to give up cheap forms of energy to take up expensive ones). Quite the reverse is true: environmentalists all too often just don't get what economists are trying to tell them.

I especially liked this little section which so neatly eviscerates the Stern Report:

(picture from Eden's Path)

Here's a letter I sent to the editor of The Economist:

Sir,

Last winter, we were told by scientists that it was `stupid' to take the cold weather as evidence against global warming. Yet this winter you are quite happy to speculate, entirely against the consensus view, that the cold weather is evidence for global warming (`A Cold Warming', Dec 4th). In support of this fancy, you cite `some' evidence that summer heat `may' induce shifts in atmospheric circulation that `might' encourage seasonal patterns that would `probably' mean more cold winters in Britain. Spare us the astrology, please.

There is a big new report on shale gas from the No Hot Air website. It is far too expensive for me, but here is a summary of what it supposedly concludes:

The key issue going forward for natural gas is not managing supply, but creating demand.

The US success in shale gas technology can be replicated in multiple locations world-wide.

My latest Wall Street Journal column is on the work of Sugata Mitra, who is turning education upside down with the help of the internet:

For some time now I have been aware of environmentalists who dislike the way their agendas have been hijacked by climate change. The orthodox view is that climate change is raising the profile of all environmental issues, but is it?

Can it really be easier to raise money for a wildlife conservation project in Madagascar or Galapagos when everybody is saying that the major threat is not habitat loss or invasive species, but slow warming?

Can it really be helpful for bird conservation when green groups take money from wind companies which kill golden eagles?

Update: I have misled the reader about the quantity of neodymium in a wind turbine magnet. The magnet is not pure neodymium, but an alloy of Nd, iron and Boron. So there's a lot less than 2.5 tonnes of Nd itself in a 2.5MW turbine magnet. There's still plenty of it, though. Hat tip Tim Worstall.

2nd Update: I am told 270kg of Nd per megawatt is about right, though it will vary with different kinds of magnet. That means about 675kg of Nd in a 2.5MW turbine. Hat tip Alan Bates.

"The broad generalisations that label Africa a continent of failure and business losses are plain wrong. They are part of that same pessimism that insists the only products worth investing in are misery and minerals."

We are getting somewhere. There is a long response to my Times article from ocean acidification scientists here. This makes me rather happy. The response confirms the accuracy of my main points. I have sent the following response to Nature's website, which carried a report on this matter:

I am glad to have my main point confirmed by the reply: that there is in fact no evidence for net biological harm likely as a result of realistic changes in ocean pH. This is a huge and welcome change from the exaggerated rhetoric that has been used on this topic.

The reply also confirms the accuracy of virtually all of my factual assertions about the likely change in pH, the natural variation in pH and other issues, including the involvement of a Greenpeace ship in a research project. Only my interpretation is challenged.

On his blog, A Very Remote Period Indeed, Julien Riel-Salvatore discusses his recent paper about Neanderthals and innovation:

I'm quoted [in the press release] as saying, among other things, that this study helps 'rehabilitate' Neanderthals by showing that they were able to develop some of the accoutrements of behavioral modernity independent of any contact with modern humans. While I've caught a bit of flak from some friends and colleagues for that turn of phrase, I stand by my statement -this study helps to cast Neanderthals in a much more positive light than they have been for a long while now.

In my book, I argue that Neanderthals --though highly intelligent -- did not show a tendency to innovate, because they did not show a tendency to exchange (their artefacts never come from far away), and this kept their toolkit much the same till the end. The discovery of Neanderthals innovating would therefore be a blow to my argument.

I have just found at Spiked Online Brendan O'Neill's superb recent essay on whether the earth is finite, and I heartily recommend it. Here's a sample:

Over the past 200 years, Malthusians have tended to look at people as simply the users-up of scarce resources. They have tended to view nature as the producer of things and mankind as the consumer of things. And their view of people as little more than consumers - almost as parasites - inevitably leads to them seeing human beings as the cause of every modern ill, and therefore reducing the number of human beings as the solution to every modern ill. Their focus on finiteness means they conceive of humanity as a kind of bovine force, hoovering up everything that it comes across.

I read this while sitting in a hotel room at San Francisco airport. Huge jets queue for take off in full view of my window. I am in the middle of a great conurbation. But between me and the jets lies a stretch of water, an arm of the Bay itself. And the water is a bird watcher's paradise. There are rafts of ducks such as buffleheads and wigeon. There are pelicans, grebes and two speces of gull. Along the shore there are great white and little egrets, willets, whimbrels, grey plovers, stints, dowitchers, avocets, yellow-legs and tight flocks of sandpipers. Sea lions cruise a litle further out, and an osprey has just plunged into the water after a fish.

Here is my latest Wall Street Journal column. It led me into the etymology of the word `optimism' and the realisation that at first it meant almost the opposite of what we now mean by it, namely that the world was at its `optimum' and could not improve.

A Haitian who survived the January earthquake and has so far escaped cholera recently told a reporter that this month's Hurricane Tomas wasn't as bad as he thought it would be, "thank God." I know it's often just a verbal tic, but it has always struck me as odd that people who survive natural disasters thank God for saving them but rarely blame Him for the disaster.

It has been quite a decade for natural disasters: the Indian Ocean tsunami, Hurricane Katrina, Burma's cyclone, Pakistan's floods, China's quake. Only once to my knowledge has there been much media debate about whether these disasters were "acts of God"-after the Indian Ocean tsunami of 2004, perhaps because it happened on the day after Christmas. In any case, I always felt the phrase applied better to 9/11, considering the motivation of the terrorists.

A new paper in Science casts further doubt on the usefulness of the Paleocene-Eocene Thermal Maximum (PETM) as a warning of what we face from man-made carbon emissions. Tropical rain forests became more diverse, not less, during the warm spell.

The paleontologist who made this discovery told Science News:

"We were expecting to find rapid extinction, a total change in the forest," says study leader Carlos Jaramillo, a biologist at the Smithsonian Tropical Research Institute in Balboa, Panama. "What we found was just the opposite - a very fast addition of many new species, and a huge spike in the diversity of tropical plants."

Here is the letter that David MacKay sent me following my article in The Times and to which I replied.

(I have gone to weblinks for his charts and in one case come up with a slightly different version -- the sea ice graph I could not find the exact one he included so I have found another from the same source which has more years on it than his version, but it's the same data and the same source.) Update: all graphs now correct!

Don Boudreaux has a lovely essay in the Christian Science Monitor (interest declaration: he mentions my book) in which he makes the point people often miss about markets, that they encourage diversity rather than one-size-fits-all solutions:

Contrast the multitude of different market-generated and voluntarily adopted ideas with the ideas of progressives - for example, progressives' idea thatgovernment must regulate the fatcontent of foods.

Each of us can decide how much we value, say,juicy burgersand double-dark chocolate ice cream compared to how much we value a trim waistline and longer life expectancy. And each of us values these benefits differently. The dietary choices that I make for myself are right for me, but I cannot know if they are right for anyone else. Progressives, in contrast, falsely assume there's a single correct metric, for the whole country, that determines for everyone how to trade off the satisfaction of eatingtasty but fatty foodsfor the benefit of being healthier.

There is a hilarious letter in today's Times from three FRS professors about my recent artilce on ocean acidification.

Despite conceding the factual truth of my article in detail, they tell me to brush up on chemistry then give no examples of me getting anything wrong.

They concede my point that any shift of acidity will be within natural ranges. Thanks. But say it could be much larger `in the future'. No numbers, note. They mean in several centuries.

UPDATE: David MacKay's letter is now up in a separate post here

Some weeks ago I wrote an article for The Times about why I no longer find persuasive the IPCC's arguments that today's climate change is unprecedented, fast and dangerous.

Update: I'd like to add one thing to the story below. Stewart Brand, who I know and admire, played a prominent part in the Channel 4 film. He's not a `convert' to these views. He has always been strongly pro-GM food and mildly pro-nuclear. So my comments here were not aimed at him.

Last night saw a TV programme in the UK called What the Green Movement Got Wrong, in which various greens admitted that they had done terrible harm by opposing nuclear power and GM food and indoor DDT. It was a pretty good programme, especially on Chernobyl.

I have an article in The Times today (behind a paywall) on ocean acidification. Here's the gist:

Today in Beijing an alliance of scientists called Oceans United will present the United Nations with a request for $5 billion a year to be spent on monitoring the oceans. High among their concerns is ocean acidification, which `could make it harder for animals such as lobsters, crabs, shellfish, coral or plankton to build protective shells'.

As opinion polls reveal that global warming is losing traction on the public imagination, environmental pressure groups have been cranking the engine on this `other carbon dioxide problem'. `Time is running out' wrote two activists in Scientific American in August, `to limit acidification before it irreparably harms the food chain on which the world's oceans - and people - depend.'

Here (a bit late) is my latest Wall Street Journal column, on epigenetic inheritance

In the debate over whether our fates as individuals are ruled by nature or nurture-that is, by innate qualities or personal experience-one of the most baffling features is the way the nurture advocates manage to cast themselves as the great foes of determinism. "Genes don't determine who we are," they insist-all the while positing that environmental causes often do. Remember how some Freudians tried to blame autism, schizophrenia and even homosexuality on the way parents treated their children? True, they claimed these effects were treatable, but so are many genetic problems. I wear glasses to correct a partly genetic tendency to myopia.

Nor has environmental determinism escaped moral stain. When Soviet agriculture was forced to obey crank theories that environmental conditioning rather than breeding could determine the frost-resistance of wheat-not coincidentally echoing the notion that human nature could be remade by communism-the result was famine.

I have just sent this letter to the Guardian:

In response to Donald Brown's call for climate scepticism to be classified as a crime against humanity (1st November),

in which he said `We may not have a word for this type of crime yet, but the international community should find a way of classifying extraordinarily irresponsible scientific claims that could lead to mass suffering as some type of crime against humanity':

Over at LIberal Curmudgeon, Steve Budiansky has a good insight into a subject he knows well, ever since writing the book Nature's Keepers: claims about species extinction.

The whole science behind the extinction crisis is riddled withcircular reasoning, but this is an especially fine example. No new research was involved, no field studies, no nothing that involved actual science as we know it. (The researchers for example concluded that habitat loss is one of the "root causes" of global biodiversity loss; this conclusion was derived from the fact that many of the species listed as threatened on the IUCNRed Listwere presumed to be threatened, and accordingly placed on the list in the first place, because of . . . habitat loss)

Like Steve, I care about extinctions. In my youth I worked on three different projects to try to diagnose and arrest the decline of rare birds in the Indian subcontinent. But like me he fears that mega-political statements and exaggerated claims will only do that cause harm:

Here is Sunday'sNew York Times variety puzzlewhose solution was a nice surprise for me (hat tip Steve Budiansky).

Tim Worstall has an enlightening essay on his specialist subject, rare earths.

Rare-earth minerals are the 15 elements in that funny box at the bottom of the periodic table -- known as lanthanides -- plus two others. About 95 percent of global production takes place in China, largely at one huge mining complex in Inner Mongolia. The lanthanides are essential to much of modern electronics and high-tech equipment of various kinds. The magnets in windmills and iPod headphones rely on neodymium. Lutetium crystals make MRI machines work; terbium goes into compact fluorescent bulbs; scandium is essential for halogen lights; lanthanum powers the batteries for the Toyota Prius. For some of these products, alternative materials are available (moving to a non-rare-earth technology would make those cute little white earbuds about the size of a Coke can, though). For others, there simply isn't a viable substitute.

In other words, those vast wind turbines depend on surface mining just as much as the fossil fuel industry does.

Further evidence that ocean acidification is a non-event, scientifically, even while being a big event for scientists financially:

Thus, both of the investigated coastal plankton communities were unaffected by twenty-first century expected changes in pH and free CO2. This may be explained by the large seasonal, and even daily, changes in pH seen in productive marine ecosystems, and the corresponding need for algae to be pH-tolerant.

Yup.

My latest column in the Wall Street Journal is about the psychology of bureaucracy. just as we need to understand the human proclivities that give rise to booms and busts in markets, so we need to understand the human proclivities that motivate officials. Here are five identified by Slavisa Tasic, starting with `illusions of competence':

Psychologists have shown that we systematically overestimate how much we understand about the causes and mechanisms of things we half understand. The Swedish health economist Hans Rosling once gave students a list of five pairs of countries and asked which nation in each pair had the higher infant-mortality rate. The students got 1.8 right out of 5. Mr. Rosling noted that if he gave the test to chimpanzees they would get 2.5 right. So his students' problem was not ignorance, but that they knew with confidence things that were false.

The issue of action bias is better known in England as the "dangerous dogs act," after a previous government, confronted with a couple of cases in which dogs injured or killed people, felt the need to bring in a major piece of clumsy and bureaucratic legislation that worked poorly. Undoubtedly the rash of legislation following the current financial crisis will include some equivalents of dangerous dogs acts. It takes unusual courage for a regulator to stand up and say "something must not be done," lest "something" makes the problem worse.

Here's anhour long conversationI did on Econtalk with economist and novelist Russ Roberts about trade, prosperity and Adam Smith. It includes a discussion of why animals can manage reciprocity but not, apparently, exchange.