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"Remember carbon capture and storage? Five years ago, the idea of grabbing the carbon dioxide from coal and gas power plants and burying it deep underground was considered an essential technology for curbing the world's greenhouse-gas emissions. A diagram of how various sorts of carbon capture might work. (Congressional Budget Office) But carbon capture hasn't fared well in the years since. Since 2008, world governments committed at least $25 billion to fund large-scale demonstration projects, the Financial Times reports. And we have remarkably little to show for it so far."

"Forest ecologists like a challenge however, and there have been several attempts at estimating the forest carbon "sink". According to this analysis, intact forests and those re-growing after disturbance (like harvesting or windthrow) sequestered around 4 billion tonnes of carbon per year over the measurement period - equivalent to almost 60% of emissions from fossil fuel burning and cement production combined."

"The technical solutions needed to reduce greenhouse gases at a speed capable of preventing catastrophic climate change are now well known. The recently launched University of Melbourne research report, Post Carbon Pathways shows the key features of the post-carbon economy road map are now widely understood. We need rapid replacement of fossil fuels by renewable energy; rapid reductions in energy consumption and improvements in energy efficiency; and the drawdown and sequestration of carbon into sustainable carbon sinks."

"On that cold day, we were told not to get our hopes up. Carbon farming was not going to be the great solution for boosting lean incomes. Boost your soils because it will be good for your land and your crops, we were told, not to make a motza out of carbon farming."