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More trees, less grass, no food : Comments
By Viv Forbes, published 10/11/2021Artificial carbon capture is an unnecessary waste - the grasslands, forests, crops and continental shelf of Australia sequester far more carbon dioxide than Australia emits from all energy, transport, agriculture and mining sources.
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Trying to bury CO2 deep underground is an idea that seemed to have a lot of potential in the 20th century, but by about a decade ago it became clear that it would be uneconomic. It's not the greens who are responsible for the continued wasting of government money on geosequestration; it's the COALition sucking up to the fossil fuel industry.
Biosequestration is, as Viv recognises, far more practical. But it's not as simple as it sounds, as the natural decay processes return much of the carbon to the atmosphere. Viv does acknowledge that further down the page, but seems oblivious to its significance here.
The idea that burning coal is carbon neutral on a sufficiently long timescale is at best dubious, as most of the world's coal formed before fungi evolved the ability to break down lignin.
The proportion of carbon sequestered into human bodies isn't most; it's minuscule. Likewise, the energy needed and emissions created in logging, chipping, transport and replanting forests is minuscule compared to the energy stored in the wood itself.