CLIMATE is complex but in an attempt to understand the effects of increasing levels of atmospheric carbon dioxide on global temperatures simplified General Circulation Models (GCMs) have been developed and are used by the United Nation's … [Read more...] about Radical New Hypothesis on the Effect of Greenhouse Gases
Opinion
Unethical Forest Protestors in Tasmania: A Note from Alan Ashbarry
IN a rare display of sympathy and understanding for forest contractors, ABC journalist Tom Tilley has put the hard word on protestors in the Upper Florentine Valley, accusing them of perhaps even being “unethical”. You can play the interview … [Read more...] about Unethical Forest Protestors in Tasmania: A Note from Alan Ashbarry
Global Warming in Perspective: A Note from William Happer
"BUT the climate is warming and CO2 is increasing. Doesn't this prove that CO2 is causing global warming through the greenhouse effect? "No, the current warming period began about 1800 at the end of the little ice age, long before there was an … [Read more...] about Global Warming in Perspective: A Note from William Happer
To Tax or Trade Carbon
Australian economist Alan Moran considers the advantages of taxing versus trading to reduce carbon emissions and concludes the best policy for Australia is to do nothing till 2020, then catch up by 2050, given the Treasury’s estimate at 3 percent … [Read more...] about To Tax or Trade Carbon
Shark Numbers and Shark Attacks
THERE have been three shark attacks in Sydney waters over the last three weeks, but there is no agreement as to whether shark numbers are on the increase – or not. According to NSW Deputy Premier, Carmel Tebbuts, there is no evidence of increased … [Read more...] about Shark Numbers and Shark Attacks
Imposing Our Prejudices on the Value of Flood Waters: A Note from Cathy Green
WHEN nutrient rich water flows into Lake Eyre it is considered good for the environment, but when nutrient rich water flows into the Great Barrier Reef lagoon it is considered bad for the environment. Indeed every time that Lake Eyre in central … [Read more...] about Imposing Our Prejudices on the Value of Flood Waters: A Note from Cathy Green
Jennifer Marohasy BSc PhD is a critical thinker with expertise in the scientific method.
