Cold Kills, and Green Energy Does More Harm than Good

The Australian Journal of General Practice (AJGP) promotes climate alarm

By Dr D Weston Allen (MBBS, FRACGP, Grad Dip Phys Med)

The August edition of the AJGP published a dreadful article authored by members of the Doctors for the Environment Australia (DEA), linking climate change to increased mortality from extreme weather events, bushfires, infectious diseases, water insecurity and reduced crop yields.1 The AJGP editor found the following letter “informative and interesting” but rejected it for publication.

The health impacts of climate change are mixed. Cold weather has more prolonged effects than heat2 and a much greater global mortality.3 Anthropogenic warming may be saving over a million lives annually.4 Cold-related deaths are projected to exceed heat-related deaths for some decades across most of the globe,5 even without adaptation and based on very improbable future emissions6 and climate models that run too hot.7

The latest scientific Assessment Report of the IPCC admits uncertainty regarding the climate sensitivity to CO2 and its impact on extreme weather events,8 whose global mortality has dramatically declined9 and normalised cost not increased.10

The diurnal temperature range (DTR) impacts health, increasing cardiac mortality by up to 3%,11 respiratory infections by 1-2%,12 childhood asthma by 6%13 and gastroenteritis by 3%14 per 1⁰C increase in DTR. By slowing the radiative cooling of Earth’s surface, greenhouse gases increase minimum temperatures more than maximums15 and thus reduce DTR and its adverse health impacts.16

Global crop yields keep reaching record levels,17 partly due to CO2 promoting growth18 and mitigating both heat-stress19 and drought.20 Protein content can be maintained by genotype selection21 and nitrogen fertilization.22 Global irrigation demand is expected to decline by about 17% by the 2080s due to the beneficial effects of CO2, shorter growing periods and regional precipitation increases,23 thus reducing the net global population at high risk of water stress.24

Energy policies impact human and planetary health.25 Promoting diesel to reduce CO2 emissions actually increased air pollution.26 Burning wood can be worse than burning coal.27 Intermittent renewables and the infrastructure required for baseload power are very resource intensive 28 and thus threaten biodiversity.29 Mining neodymium for wind turbine magnets produces radioactive waste.30 Nuclear power uses the least land/resources,31 has the lowest life-cycle emissions32 and fewest human deaths per unit of energy produced.33

Objectively evaluating all the evidence is essential. Whereas carbon dioxide is greening the planet and benefitting human health, climate action driven by ideology and vested interests may do far more harm than good.

1 Pendry CGA, Beaton L, Kneebone JA. General practice in the era of planetary health. AJGP 2020; 49 (8): 520-523

2 Braga ALF, Zanobetti A, Schwartz J. The effect of weather on respiratory and cardiovascular deaths in 12 U.S. cities. Environmental Health Perspectives 2002; 110: 859-863.

3 Gasparrini A, Guo Y, Hashizume M, et al. Mortality risk attributable to high and low ambient temperature: a multicountry observational study. The Lancet. 2015: 386 (9991): 369-375. DOI: 10.1016/S0140-6736(14)62114-0.

4 Bosello F, Roson R, Tol RSJ. Economy-wide Estimates of the Implications of Climate Change: Human Health. Ecological Economics 2006; 58(3): 579-91.

5 Gasparrini A, Guo Y, Sera F, et al. Projections of temperature-related excess mortality under climate change scenarios. The Lancet Planetary Health. 2017: 1 (9): 360-367. DOI:

6 Hausfather Z, Peters GP. Emissions – the ‘business as usual’ story is misleading. Nature 2020; 577: 618-620 doi: 10.1038/d41586-020-00177-3

7 McKitrick R, Christie J. A test of the tropical 200- to 300-hPa warming rate in climate models. Earth and Space Science 2018; 5: 529-536

8 Bindoff NL, Stott PA, et al. Detection and Attribution of Climate Change: from Global to Regional. In: Climate Change 2013: The Physical Science Basis. Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change [Stocker TF, Qin D et al. (eds.)] 2013: 871-924. Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA

9 Goklany IM. Deaths and death rates due to extreme weather events: 1900-2008. Journal of American Physicians and Surgeons 2009; 14 (4): 102-109.

10 Pielke R. Economic ‘normalisation’ of disaster losses 1998-202: a literature review and assessment. Environmental Hazards 2020; DOI: 10.1080/17477891.2020.1800440

11 Cao J, Cheng Y, Zhao N, Song W, Jiang C, Chen R, Kan H. Diurnal temperature range is a risk factor for coronary heart disease death. Journal of Epidemiology 2009;19: 328-332.

12 Ge WZ, Xu F, Zhao ZH, Zhao JZ, Kan HD. Association between diurnal temperature range and respiratory tract infections. Biomedical and Environmental Sciences 2013; 26: 222-225.

13 Xu Z, Huang C, Su H, Turner LR, Qiao Z, Tong S. Diurnal temperature range and childhood asthma: a time-series study. Environmental Health 2013; 12:

14 Xu Z, Huang C, Turner LR, Su H, Qiao Z, Tong S. Is diurnal temperature range a risk factor for childhood diarrhea? PLoS One 2013; 8(5):e64713. DOI: 10.1371/journal.pone.0064713.

15 Alexander LV, Zhang X, Peterson TC et al. Global observed changes in daily climate extremes of temperature and precipitation. J. Geophys. Res. Atmos. 2006; 111 (D5): 109-141

16 Braganza K, Karoly DJ, Arblaster JM Diurnal temperature range as an index of global climate change during the twentieth century. Geophysical Research Letters 2004: 31 (13): 217-221

17 Abbott C. Record-high world grain production for second year in a row. Successful Farming 6/8/2020. [accessed 24/9/20]

18 Ainsworth EA, Long SP What have we learned from fifteen years of free-air CO2 enrichment FACE? A meta-analytic review of the responses of photosynthesis, canopy properties and plant production to rising CO2. New Phytologist 2005; 165:351-372.

19 Gutiérrez del Pozo D, Gutierrez E, Pérez P, et al. Acclimation to future atmospheric CO2 levels increases photochemical efficiency and mitigates photochemistry inhibition by warm temperatures in wheat under field conditions. Physiologia Plantarum 2009; 137 (1):86-100. DOI: 10.1111/j.1399-3054.2009.01256.x

20 Fleisher DH, Timlin DJ, Reddy VR. Elevated carbon dioxide and water stress effects on potato canopy gas exchange, water use and productivity. Agricultural and Forest Meteorology 2008; 148:1109-1122.

21 De Costa J, Weerakoon WMW, Chinthaka KGR. et al. Genotypic variation in the response of rice (Oryza sativa) to increased atmospheric carbon dioxide and its physiological basis. Journal of Agronomy and Crop Science 2007; 193:117-130. DOI: 10.1111/j.1439-037X.2007.00255.x

22 Sultana H, Armstrong R, Suter H, et al. A short-term study of wheat grain protein response to post-anthesis foliar nitrogen application under elevated CO2 and supplementary irrigation. Journal of Cereal Science 2017; 75:135-137.

23 Konzmann M, Gerten D, Heinke J. Climate impacts on global irrigation requirements under 19 GCMs, simulated with a vegetation and hydrology model. Hydrological Sciences Journal 2013; 58 (1): 88-105.

24 Wiltshire A, et al. The importance of population, climate change and carbon dioxide plant physiological forcing in determining future global water stress. Global Environmental Change. 2013; 23 (5): 1083-1097.

25 ÓhAiseadha C, Quinn G, Connolly R, Connolly M, Soon W. Energy and Climate Policy-An Evaluation of Global Climate Change Expenditure 2011-2018. Energies 2020; (13) 4839.

26 Jenkins HW. Dieselgate is a political disaster. WSJ 2017; Feb. 14

27 Sterman JD, Siegel L, Rooney-Varga JN. Does replacing coal with wood lower CO2 emissions? Dynamic life cycle analysis of wood bioenergy. Environmental Research Letters 2018; 13 (1): 1-10

28 Dominish E, Florin N, Teske S. Responsible Minerals Sourcing for Renewable Energy. Report prepared for Earthworks by the Institute for Sustainable Futures, University of Technology Sydney. 2019

29 Sonter L, Dade MC, Watson EM and Valenta RK. Renewable energy production will exacerbate mining threats to biodiversity. Nature Communications 2020; 11:4174-80

30 Parry S. In China, the true cost of Britain’s clean, green wind power experiment: pollution on a disastrous scale. Mail Online 2011.

31 Cheng VKM and Hammond GP. Life-cycle energy densities and land-take requirements of various power generators: a UK perspective. Journal of the Energy Institute 2017; 90 (2): 201-213

32 Pehl M, Arvesen A, Humpenöder F. et al. Understanding future emissions from low-carbon power systems by integration of life-cycle assessment and integrated energy modelling. Nat Energy 2017; 2: 939-945

33 Conca J. How deadly is your kilowatt? We rank the killer energy sources. Forbes 2012

Do these Bankers Really Care about the Poor?

By Dr. John Happs

If you want to witness cases of scientific illiteracy, selfishness and hypocrisy, look no further than the attitudes, actions and comments from a number of banking personnel. When it comes to uninformed opinions about climate change and the lack of concern about delivering affordable energy to the poor in developing countries, some of them appear to have no equal.

Judge for yourself. Continue reading “Do these Bankers Really Care about the Poor?”

Has Australia just had its Hottest Day Evah?

Maybe, but only if you ignore our history:

Read more on the 1896 heatwave: [PDF, 360 KB]

And how to adjust the records: [Paywall]

Highest Temperature on Record in Perth? Don’t Believe a Word of It

By Dr. John Happs

Channel 7 and Channel 9 news were quick to announce that Perth experienced its highest temperature on record on Saturday, 16th November 2019.

We were told that the temperature reached 40.8oC and a record temperature was claimed. Of course we were not told exactly where that particular temperature was taken and why that “record temperature” was not recorded in neighbouring suburbs.

Interestingly, that“record temperature” of 40.8oC was measured at Perth Airport at 2.00 pm. Also at 2.00 pm, the temperature in Perth City was 38.6oC. Still hot, but 2.2oC lower than Perth Airport.

So what about the temperature in suburbs further west of the airport? Hillarys for instance recorded 24.30oC at 2.00pm on the same day – a whopping 16.5oC lower than the airport “record temperature.” Continue reading “Highest Temperature on Record in Perth? Don’t Believe a Word of It”

Alarmists Destroy Their Credibility By Degrees

Dr. John Happs

It was in Lima, Peru that the United Nations (UN) travelling climate circus met in 2014 for COP 29 in its futile attempt to limit global carbon dioxide emissions which they blamed for (imaginary) global warming. Incredibly, national leaders were told that, by pledging to reduce their carbon dioxide emissions, global temperature could be limited to 2oC above the pre-industrial level.

The Lima conference was attended by more than 10,000 delegates, flying in their ministerial jets with another 1,000 observers joining them. Collectively, they created a “carbon footprint” larger than any of the many previous climate jamborees. It was reported that:

Organisers rejected powering the village with solar panels on the grounds they were too unreliable, while efforts to hook the site up to the national grid – which is half-fed by renewable energy – failed due to technical problems.”

Electricity was supplied to the conference by diesel generators since the available renewable hydro-power couldn’t cope. Curiously, no electric or hybrid vehicles were used by attendees and bicycles were largely shunned due to dangerous driving conditions. Transport came from 300 diesel-powered cars.

Oh the irony!
Continue reading “Alarmists Destroy Their Credibility By Degrees”

How to Turn Cooling into Warming

by Dr. Jennifer Marohasy

THIS last summer has been hot in Australia. But was it the hottest ever? Summer 80 years ago was arguably as hot, if not hotter. Back then more ferocious bushfires burnt larger areas.

Yet Australia’s Environment Minister, Melissa Price, recently claimed this summer’s bushfires as a consequence of climate change. I grew up with stories from my late father of terrible bushfires – infernos – back in 1939. The Black Friday bushfires destroyed four times the area of farmland and forest as the devastating February 2009 fires – and twenty times as much as burnt this last summer. Ash from that bushfire fell as far away as New Zealand. Continue reading “How to Turn Cooling into Warming”

Comparison of the First Fleet Sydney Temperature Records with Modern Data, 1788 to 2018

By Dr G M Derrick

Executive Summary

1. Notwithstanding a data gap from 1791 to 1859, there appears to have been little or no change in the trends of monthly maximum and minimum temperatures for a period of 230 years, from 1788 to 2018, based on comparisons of two data sets—one recorded by First Fleet officer William Dawes, and one from the Bureau of Meteorology (BOM).

2. Gergis et al 2009, authors of a major study and compilation of the data, conclude that “Remarkably, the records appear comparable with modern day measurements taken from Sydney Observatory Hill, displaying similar daily variability, a distinct seasonal cycle and considerable inter-annual variability.”

This runs counter to the climate alarmism normally published by these authors.

Full article: [PDF: 2.6 MB]