I doubt whether many children read these pages. But if they did, I would like them to get hold of a few home truths which might stop them worrying about climate change:
- It did get a bit warmer in the first half of the 20th century, and again a bit warmer again in the last part of the 20th But this century, there has been little if any global warming, apart from the 2016 El Niño, which was nothing to do with carbon dioxide. We are not seeing runaway global warming, and there is no emergency.
- If the predictions of the alarmists had proved true, it would have got much warmer by now, but it has not. And so the theories of these alarmists have turned out to be mistaken. Their models are clearly wrong. Which means that their ongoing predictions are also complete crap.
- Likewise, if the predictions of the alarmists had proved true, the Arctic would have melted by now and Manhattan would be underwater. These things have simply not happened; the predicted rise in sea levels has not happened.
- It was quite a bit warmer than today in the Medieval warming period. That can have had nothing to do with man-made emissions of carbon dioxide. And it was a time when mankind did really rather well.
- It was even warmer than that at the time of the ancient Romans. Again, no significant man-made emissions of carbon dioxide then, and again it was time when mankind flourished.
- It is true that carbon dioxide levels have gone up in the last 50 years, from about 300 ppm to about 400 ppm. These are still tiny amounts, and far, far less than carbon dioxide levels have been in the past. The only detectable effect has been the trees and crops around the world have grown better, since trees and plants need carbon dioxide. That additional greening up is a good thing.
- Nobody has died from climate change, nor have there been any climate change refugees. On the contrary, the migration pattern we have seen has been the same migration of rich people for decades now, moving from colder climates to warmer climates. Because warmer climates are more pleasant and more healthy.
- Conversely, millions of people are now dying around the world as a result of climate change activism. In particular, poor people – particularly an Africa and the Indian subcontinent – are dying for lack of affordable electricity. Pressure from the environmentalists on institutions like the World Bank means that it is more difficult now for poor regions to obtain affordable electricity from traditional power stations. That means they have to cook indoors using dung and other highly polluting fuels. If the likes of Extinction Rebellion were to get their way, the wealthy would be fine, but unnecessary poverty and death of the poorer and weaker would soar even higher.
- Pollution, including pollution from coal-fired power stations and diesel vehicles in cities, can be a real problem, and that is a problem that should be addressed. But it is a problem that has nothing to do with global warming. And carbon dioxide is not, by any stretch of the imagination, a pollutant.
- Climate change is an imperfectly understood science. It is much more likely that, in a highly complex system, the sun is the main driver rather than carbon dioxide levels. But what we do know is that the Earth repeatedly experiences ice ages which last about 10 times as long as the interglacial periods, and that we are now pretty much at the end of the usual interglacial period (about 10,000 years on average). If it were possible to delay or even prevent the onset of the next ice age by massive man-made global warming, that would be a fantastic achievement, which would save billions of lives. But the greenhouse effect of carbon dioxide is tiny – not nearly enough to produce the warming that we would need.
- Real scientists:
- test their hypotheses against actuality, and if their hypotheses don’t work, they junk them, and try to work out something else;
- publicly share their data;
- welcome criticism, and are willing to engage in debate as to whether their hypotheses hold water;
- root out and reject data which has been manipulated or cherry picked;
- do not try to silence other scientists who disagree with them, but treat them with respect and listen to their arguments.
- The current crop of climate scientists do none of these things. They are scientists in much the same way that Scientologists are scientists. Hardly anyone gets to be a climate scientist these days who is not already a climate change alarmist. And so asking what the majority of climate scientists think about global warming is like asking what the majority of Jesuit priests think about the virgin birth. Try it. Try asking a Jesuit priest about the possibility that Jesus’s mother Mary was lying about not having had a bonk. Really.
- It is hardly surprising that governments around the world have been jumping on the climate change bandwagon. Government is the biggest business in the world. And climate change gives them a great opportunity to increase their income from taxation and increase their control over what ordinary people can or cannot do.
- An overwhelming consensus in favour of a particular viewpoint is not evidence at all that that viewpoint is correct. When Galileo first spoke out, there was an overwhelming consensus that the sun went around the earth. Until a couple of hundred years ago, there was an overwhelming consensus among doctors that it was a good idea to take large quantities of blood out of people who are unwell. Even today, there is an overwhelming consensus in the Middle East in the infallibility of the teachings of the psychopathic warlord who hated Jews. Remember that the vast majority of consensus has no independently formed intelligence at all, but is merely moving with the crowd. Much more intelligent is to tune in to the observations of smart people who are looking at the data, making their own analyses.
- There’s no great harm in some of the gestures that are made in the name of global warming, but remember that they are not cost free:
- Electric vehicles are fine for cities (not so good for long journeys). But bear in mind that their construction means that they cause considerable ecological damage;
- wind turbines are fine, as long as the wind is blowing at the right speed. But bear in mind that they cause considerable health risks to people living nearby, create huge carbon dioxide emissions to build, are a big headache to dispose of at the end of their short lives and are very damaging to birdlife;
- solar panels on the roof are fine, particularly in places (such as where I live, in South Australia) where there are frequent power cuts. But bear in mind that they do not produce electricity at night, and to store their daytime electricity for night use requires massive batteries which are very expensive and bad for the environment;
- disapprove of nuclear power if you like. But bear in mind that it is the cleanest and safest generation system around today, and that the Fukushima incident (nuclear power plant swamped by a tsunami) cost zero lives in terms of radiation exposure, but the Japanese response (closing down its other nuclear power plants) has caused thousands of disadvantage Japanese people to die (they could not cope with the doubling of electricity prices in their homes).
- If, like little Greta Thunberg, you have been radicalised by watching the likes of David Attenborough’s TV programmes about nature and the like, remember that:
- David Attenborough did not write those scripts. He was just paid to read the voiceovers. He was not hired because he is bright – he was hired because he has a lovely soothing voice;
- Polar bears are not endangered. Their numbers have multiplied in recent years;
- When they show you pictures of those huge towers on traditional power stations, the clouds above them are not pollution, but merely water vapour. Just ordinary, harmless clouds;
- When they show you videos of hurricanes and other extreme weather events, they are showing you exceptions, not the rule. The number of extreme weather events has been falling, as the world’s climate gets more benign. And the number of people killed by extreme weather events is these days a small fraction of what it was 100 years ago.
When you grow up, and depending on where you grow up. you might be inclined to blame your parents for being such soft-headed woke hippies. Especially if you look across at places that did not go woke, did not go broke and are much Continue reading