carbon dioxide from the atmosphere, 7-9 billion tonnes a year.
The Intergovernmental Panel on Climate Change (IPCC) says carbon dioxide removal technology will be required to achieve global and national net zero targets. In other words, there is no net zero without CO₂-removal, because emissions of greenhouse gases are not declining anywhere near fast enough.
There will be trade-offs, as CO₂-removal can be costly and often uses up energy, water and land. But Earth is hurtling towards a climate catastrophe, with more than 3°C of warming under current global policies. We must do everything we can to avert disaster, which means slashing emissions as much as we possibly can, and removing what's left.
Within the international scientific community the debate about carbon dioxide removal has moved on from «could we, should we?» to «we must» — recognising the urgency of the situation. So it's worth coming up to speed on the basics of carbon dioxide removal technology, both old and new, and the role we can expect it to play in Australia's net-zero future.
Why do we need carbon dioxide removal?
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