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FREEMAN Dyson is a polymath. His first career was as a Cambridge mathematician.
Then he developed an interest in quantum mechanics and nuclear physics.
He's also something of a futurologist, an authority on nuclear
non-proliferation issues and a gifted explainer of science to general
audiences.
For 40 years his day job was as a professor of physics at the
Institute for Advanced Study in Princeton, New Jersey. Another claim to
fame is that he's one of the most eminent scientists among the growing
band of global warming sceptics.
To its credit, The New York Review of Books numbers Dyson among its
stable and in its June 12 edition has published a fascinating review by
him of two climate science books.
Characteristically, he uses familiar data on the annual cycles of
growth and decay in vegetation to put the scale of the potential
problem posed by human-induced global warming into an unexpected
perspective.
"About 8 per cent of the carbon dioxide in the atmosphere is
absorbed by vegetation and returned to the atmosphere each year," Dyson
writes. "This means that the average lifetime of a molecule of carbon
dioxide in the atmosphere, before it is captured by vegetation and
afterwards released, is about 12 years. This fact, that the exchange of
carbon between atmosphere and vegetation is rapid, is of fundamental
importance to the long-range future of global warming."
Certainly the speed of the exchange suggests that, in the unlikely
event that human-induced global warming were to prove a real problem,
we'd have far more time up our collective sleeve to finetune a
preferred level of atmospheric CO2 than any of the catastrophist
scenarios allow for. Unlike geosequestration, we know that carbon sinks
work on a grand scale. Dyson thinks that extending the scale of
naturally occurring carbon sequestration in temperate zone forests, by
biotechnological means, holds out most hope of managing atmospheric
carbon without crippling the global economy.
He says: "If we control what the plants do with the carbon, the fate
of the carbon in the atmosphere is in our hands ... The science and
technology of genetic engineering are not yet ripe for large-scale use.
We do not understand the language of the genome well enough to read or
write it fluently. But the science is advancing rapidly and the
technology of reading and writing genomes is advancing even more
rapidly. I consider it likely that we will have 'genetically engineered
carbon-eating trees' within 20 years and almost certainly within 50
years.
"Carbon-eating trees could convert most of the carbon they absorb
into some chemically stable form and bury it underground. Or they could
convert the carbon into liquid fuels and other useful chemicals.
Biotechnology is enormously powerful, capable of burying or
transforming any molecule of carbon dioxide that comes into its grasp
... If one-quarter of the world's forests were replanted with
carbon-eating varieties of the same species, the forests would be
preserved as ecological resources and as habitats for wildlife, and the
carbon dioxide in the atmosphere would be reduced by half in about 50
years."
If all this sounds too good to be true, Dyson invites us to consider
the transformative technologies of the past 60 years: "It is likely
that biotechnology will dominate our lives and our economic activities
during the second half of the 21st century, just as computer technology
dominated our lives and economic activity during the second half of the
20th. Biotechnology could be a great equaliser, spreading wealth over
the world wherever there is land and air and water and sunlight."
The main vehicle for Dyson's essay is a review of an economic
analysis of climate change policies by William Nordhaus, A Question of
Balance: Weighing the Options in Global Warming Policies (Yale
University Press). While Dyson deplores that Nordhaus devotes little
attention to his preferred ultra-low-cost biotech solution, he quotes
with approval a rule of thumb covering all the other options that
Nordhaus directs to the general reader: "Whether someone is serious
about tackling the global warming problem can be readily gauged by
listening to what he or she says about the carbon price. Suppose you
hear a public figure who speaks eloquently of the perils of global
warming and proposes that the nation should move urgently to slow
climate change. Suppose that person proposes regulating the fuel
efficiency of cars, or requiring high-efficiency lightbulbs, or
subsidising ethanol, or providing research support for solar power, but
nowhere does the proposal raise the price of carbon. You should
conclude that the proposal is not serious and does not recognise the
central economic message about how to slow climate change. To a first
approximation, raising the price of carbon is a necessary and
sufficient step for tackling global warming. The rest is rhetoric and
may actually be harmful in inducing economic inefficiencies."
This was precisely the point on which Treasurer Wayne Swan declined
to be drawn in an interview with Sky News' David Speers this week.
Swan's evasions prompted a lot of adverse commentary, not least from
The Sydney Morning Herald's Ross Gittins, who's usually more
ideologically sympathetic to the ALP.
Gittins wrote: "The thing I find most disillusioning about the Rudd
Government's performance is its weak-kneed pretence that the latest
rise in oil prices is some kind of hideous natural disaster, brought on
us by a terrible god inflicting death and destruction on the innocent.
This is not a brave Government. What it lacks the courage to admit is
that the price rises global market forces have been inflicting on us
are merely a foretaste of the price rises the Government plans to
impose on us through the emissions-trading scheme it will introduce in
2010. The basic principle of such schemes is brutally simple: they
force up the price of fossil fuels so as to discourage us from using
them. That's what Swan was refusing to admit."
What's sauce for the goose is sauce for the gander, of course, and
Brendan Nelson, Malcolm Turnbull and Opposition environment spokesman
Greg Hunt do not show much sign of understanding John Howard's
carefully considered approach to the politics of global warming.
All are inclined to go along with the Government's comic-book caricature of him as Mr Magoo.
In government, I've no doubt that there are plenty of Rudd's
ministers who are quietly envious of the luxury of a calibrated
position on carbon politics rather than being stuck with the
evangelical simplicities and hard left rhetoric of Climate Change
Minister Penny Wong, known to her colleagues as The Wongster. Most of
cabinet must be dreading the release of the Garnaut report and the
thankless task of trying to sell an emissions-trading regime sure to
hurt fickle voters in outer metropolitan seats.
Yet it was an entirely predictable disaster in the making. A more
seasoned Opposition leader than Rudd was would have paid lip-service to
a cooler planet while keeping his options open and his reform timetable
far more provisional.
The beauty of Howard's position is that it was so adaptable.
Confronted with science that was far from settled, it played for time
and funded research and projects that could be sold as
greenhouse-related while avoiding the worst of the damage to the
national interest that was inherent in signing the Kyoto Protocol. It
pandered to the ethanol lobby, admittedly, and took the renewable
sector more seriously than it deserved.
But at least it recognised that cutting Australian emissions would
make virtually no difference to a global outcome unless China and India
accepted similar self-denying ordinances, which has never looked
remotely likely. The main drawbacks of Howard's stance were that it was
cautious and rational when recklessness and millennial unreason were
the order of the day.
It's a given among the commentariat that Labor's policy on climate
change was a crucial element in its victory last year. It's early days
yet, but I can't help wondering if the self-same policy, together with
a lot of recent, unforced errors, is going to turn it into a one-term
wonder. I can't remember a federal government that went from
invincibility to looking decidedly flaky in eight short weeks, much of
the decline attributable to the political persona of its leader.
Perhaps, after an improbable enthusiasm for Rudd, swinging voters will
feel a corresponding wave of revulsion. Perhaps they'll just conclude
that there's less to him than meets the eye or, as Gertrude Stein
penetratingly observed of the bleak Californian city Oakland, "when you
get there, there's no there there". Source
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