Matt Andrews (Letters, June 3) rightly corrects the claim in a previous letter that only 1-3 per cent of atmospheric CO2 is due to human causes, and points out the origin of the claim.
However, he falls into the trap in the warmists v the sceptics dialogue by making a list of possible errors and omissions in one version of the sceptic argument without addressing any of them. He assures a few minutes on the internet will furnish the evidence.
I think this greatly diminishes the scientific argument for either case.
If someone makes a claim they should give the evidence in the letter, not lazily refer the reader to a search of the internet where verification is difficult, often not possible, and to many not understandable.
My fear is government decisions will skirt around the scientific evidence for and against the magnitude of increased CO2 impacts, with policy statements continuing to be determined by lobby groups using similar unsupported comment.
Joe Walker
Chapman
JUDGES UNDER STRESS
Tucked away in the article early this week reporting the Attorney-General's disinclination to appoint yet another Supreme Court judge (''No cash for extra judge, Corbell says'', June 1, p4) was the disturbing information that there are too many decisions delayed for far too long.
Delayed decisions mean the waiting parties are distressed, costs mount up, judges' stress levels increase, and people who are waiting for their cases to be heard get irritated. All up it means a loss of confidence in, and respect for, our legal system.
This can't go on. Judges need time to write good decisions. Hasty reasons lead to appeals that add further pressure to hearing times and the writing of appellate decisions.
There may or may not be a good argument for a fifth judge. The court must immediately have some short term visiting judges who can hear cases while those with writing duties shut themselves away to hand down those long awaited judgments.
Hugh Selby
Lyneham
GARDENS PLEA WELCOMED
Professor John Mulvaney's impassioned plea to Environment, Heritage and Arts Minister Peter Garrett (''The neglect of an undervalued national institution'', June 3, p19) struck a chord with this longstanding Canberra resident, and I am sure represents the views of many Australians.
The National Botanic Gardens in its earlier years surprised all visitors with its achievements but has succumbed to neglect unlike other institutions such as War Memorial.
Urgent action such as envisaged by Professor Mulvaney would restore the botanic gardens to deserved prominence and his call for an expert council would attract members of outstanding merit. The day when the National Botanic Gardens rivals the Australian War Memorial in its attraction to the dispensers of federal funds and private philanthropists will be welcomed by all and will surely be a lasting tribute to the foresight of the minister.
Clive Monty
Waramanga
TRIBUNAL DEFENDED
The presidents, members and staff of the ACT Civil and Administrative Tribunal strive to give quick, fair and inexpensive service to all who bring matters to it.
Our success rate since inception (February 2, 2009) may partly be measured by the fact that although the Government anticipated we would have about 100 appeals this far into our existence, we have only had eight. We usually run the relatively simple matters in a short timeframe.
Occasionally there are more complex matters, and these are given appropriate, and often more lengthy, consideration. But they are all considered. I do not know the identity of your correspondent (Letters, June 2).
I can assure your readers there is no matter before the tribunal (nor was there before the Small Claims Court) in the name of ''T.N. Amialca''.
It is curious that if you read the name backwards, it becomes ''a claimant''.
I am ready to deal with queries, appeals or complaints. But I am less inclined to give time to an anonymous attack from a disgruntled litigant or perhaps a completely gratuitous troublemaker.
Athol Morris
Registrar, ACT Civil and Administrative Tribunal, Canberra City
FORGOTTEN HEROES
Congratulations to those long-serving ACT public servants and the agencies they represent (''Our own public service marks 20 years'', June 3, p5). But, search as I might, I couldn't locate any of the ACT Government's front-line troops such as ambos, nurses, firefighters or my mob, school teachers.
Why the inexplicable omission?
Maybe someone forgot to invite them? Maybe they are just so overworked they haven't got the time to sit around having their photos taken?
Maybe, as usual, they're taken for granted by the ACT Government?
Or maybe, just maybe, they have such comparatively poor pay and conditions that finding one who's lasted 20 years is like searching for the proverbial haystack needle?
Philip Rasmus
Australian Education Union, ACT Branch
CHINA SHAME
Congratulations to Ian Melrose for his advertising campaign against the sale of Australian resources to the Chinese Government.
The Chinese Government must be seen for the appalling regime it is.
We would not have sold our resources to an apartheid government or to Hitler's Germany but we continue to turn a blind eye to the atrocities committed in China. The International Commission of Jurists has found the Chinese authorities guilty of genocide in Tibet.
Chinese Government officials should be arrested when they next travel abroad and put on trial for their crimes against humanity.
Shame on all those companies, politicians and businessmen who are feted by and break bread with these Chinese authorities who have so much blood on their hands.
Lynn Russell
Yarralumla
NEW ERA IN MID-EAST
Like your editorial (''Obama brings hope to Mid-East'', June 5, p13), I am comforted by the fact that President Barack Obama's speech in Cairo signalled the reshaping of United States policy towards the Middle East and the Muslim world.
Gone is George W.Bush's approach of acting impulsively, defensively and unilaterally, to be replaced by a softer approach of a thinker and reconciler, who believes diplomacy and international consensus is infinitely preferable to threats.
As if to emphasise the new US policy, Obama promised his audience, the Arab people of the region and the Muslim world which, unlike his predecessor, he intends to be an impartial peace broker in the Palestinian issue. In return, however, he expects them to play their part to isolate and reject extremists in the community, and for the leadership to reflect the will of the people.
For the first time ever, US Middle East policy is being based on mutual interest and mutual respect.
It would be most regrettable if the region's leadership were to turn away from this new beginning.
Sam Nona
Burradoo, NSW
FIREWORKS BAN NOT NEEDED
By proposing the prohibition of fireworks to address people injuring themselves, dogs getting scared and the irresponsible use of fireworks to vandalise property, proponents of the ban are failing to see that all three of these are issues of individual responsibility, where harm is actually being caused.
Injuries caused by fireworks are, by and large, owing to improper use, which is by no means isolated to fireworks. When we consider people injure themselves through improper use of alcohol, cars and stoves every day we need to ask whether we want the Government looking over our shoulder every second to step in whenever we do something stupid.
Dog owners should act responsibly and lock up their dogs securely over the Queen's Birthday weekend, as they would before New Year's Eve, thunderstorms or any number of other events much louder and more stressful to dogs than the smaller, regulated fireworks used by responsible individuals on cracker night.
Fundamentally, this is a matter of responsibility. During the rest of the year, those who perform acts of vandalism with fireworks simply do it by other means, whether through smashing windows at schools, attacking cars or any number of other acts, without a firework in sight.
Instead of banning fireworks for everyone, we should encourage responsible use, responsible pet ownership and use the legal means already available to punish those participating in vandalism.
Joshua Smith
Gordon
FLAWED FREEDOM PROMISES
Just like others did in a different time and place, Simon Winchester expresses optimism about a ruthless, totalitarian state because it's making the trains run on time (''Bright future, bloody past'', June 4, p19).
His reports of the complacency of China's population while things are on the up are deeply irrelevant.
Everyone knows democracy and legally-guaranteed freedom are flawed, inefficient, messy concepts most of the time. The value of their unwieldy checks and balances is only revealed when things get ugly.
When the wrong leader eventually emerges from China's corrupted, opaque system.
Likely, because inevitable future economic downturn or confrontation will make its paranoid autocrats desperate.
If they're illegally kidnapping citizens now, just to mark an anniversary, imagine what they'll do under any pressure.
Trust Communist China with the fate of the world? Sure can't.
Tom Waring
Ainslie
PARTIES SHOULD BE BURIED
The stench of rank opportunism, surrounding Malcolm Turnbull and his Liberal Party leadership is surpassed only by the stench of death that has been the hallmark of the Liberal Party, since it fell into the hands of the evil gnome from Wollstonecraft, who thereafter set the bench mark for demagoguery, political terrorism, gross shameless deceit, and massive electoral disrespect.
If after the recent spat of economic data released this week, the Liberal/National Parties cannot see how wrong they have been, in their condemnation of Government Fiscal and Monetary Policy, then they should hold a burial service for their respective parties and allow Australians to be represented by an intelligent, compassionate and morally grounded Opposition.
Zyg Gardon
Chisholm
SICK RATINGS GRAB
It is sad enough that the Chaser boys thought their ''Make a realistic wish'' joke on sick children was funny (''ABC, Chaser apologise for sick child stunt'', June 5, p3).
But it is even sadder that Channel Nine, Peter Overton and Tracey Grimshaw thought it was worthy of repeating for those of us who missed the first time, in the name of public interest. Or was it ratings.
Take a bow ''Chasers'' at least you guys have the balls to admit you did a stupid and insensitive thing.
Ed [Bunny] Harris
Bonython