Carbon

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The shared stance by Australian prime minister Tony Abbott and Canada’s Stephen Harper is a formidable barrier to a global climate deal. Office of Prime Minister of Canada Stephen Harper

Making change happen in G20 climate talks: Beijing pact not enough

Having reached a landmark agreement with China this week to limit greenhouse gas emissions, US president Barack Obama heads to Australia for the G20 summit of economic superpowers. The China deal will…
By prioritizing economic growth and the fossil fuel industry over environmental protection, Australian PM Tony Abbott and Canadian PM Stephen Harper are a formidable barrier to a global climate deal. Office of Prime Minister of Canada Stephen Harper

Making change happen in G20 climate talks: Beijing pact not enough

Having reached a landmark agreement with China this week to limit greenhouse gas emissions, US president Barack Obama heads to Australia for the G20 summit of economic superpowers. The China deal will…
The Earth is finite - so are there limits to growth? NASA's Marshall Space Flight Center/Flickr

Why uncontrolled climate change may be an ultimate limit to growth

“But who do you think’s right, Prof? The optimists or the pessimists?” At the end of my sustainability economics course in 2007, students were challenging me to end 20 years of professional fence-sitting…
Carbon emissions from burning fossil fuels and cement-making reached 36 billion tonnes in 2013. Shutterstock

Mapping global carbon emissions

The latest report on global carbon emissions released this week revealed that carbon dioxide emissions will likely reach 40 billion tonnes this year. Growth in emissions continues to match the worst-case…

Human urine: a wee energy producer?

Carbon from dried human urine has been extracted for use in chemical fuel cells. These cells traditionally use platinum as…
Using tree measurements by Papua New Guinean villagers such as Daniel and Jackson, scientists can estimate that this tree stores about one tonne of carbon in its trunk and branches. Michelle Venter

How tree huggers can save forests with science

While hugging a tree sounds relaxing, it’s harder than you might think - especially when the tree is 20 storeys high and 3 metres wide, it’s hot as hell, and you’re swatting away swarms of sweat bugs…

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