Burn bush, reduce emissions: evaluating costs and benefits of prescribed burning

By Matthias Boer, University of Western Sydney and Ross Bradstock, University of Wollongong Bushfires are, together with cyclones and flooding, among the most important natural hazards affecting Australian communities. They also make a significant contribution to Australia’s greenhouse gas emissions. Australia has bushfires because of our inherently flammable vegetation types, the recurrence of severe droughts, and a high incidence of hot, dry weather conditions. Management agencies cannot control climate and weather. Consequently, fire hazard reduction focuses primarily on reducing bushland fuel. Starting fires to stop fires In most of Australia’s fire-prone environments, “burning off” – more formally known as prescribed, …

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Does the Chinese emissions ‘error’ matter?

By John ED Barker, Murdoch University Recent analyses that China’s carbon dioxide (CO₂) emissions might be 1.2 gigatonnes or 20% higher than previously estimated have generated something of a feeding frenzy in the media; and not just the daily tabloids. Even The Scientific American has jumped on the bandwagon, adding a few more factoids to increase the alarm. It is understandable that we could be alarmed by a figure of 1.2 gigatonnes; that’s a mighty big figure. It’s equivalent to the total of Japan’s annual emissions, the SMH repeated, without providing the more useful fact for its readers that it …

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