Emission cuts must be accompanied by greater efforts to remove CO2 from the atmosphere a new report says.
The report says natural CO2 removal processes like forests and soil are not going to be enough to stop temperature rises.Technology to remove the planet-warming greenhouse gas CO2 from our atmosphere must be urgently ramped up, leading climate experts say in a new report.And nature alone will not remove enough of it from the air.
There's consensus among scientists that the world is warming primarily because emissions of CO2 far exceed the amount that is being removed . Currently almost all of the world's CO2 removal occurs through natural processes. That's primarily plants and trees taking in CO2 from the air, and the soil absorbing and storing it.
One, known as BECCS, involves incorporating CO2 capture into biomass-based electricity-generation, in which organic matter such as crops and wood pellets are burned to produce power. Other options include: huge facilities where the carbon is extracted from the air before being stored in the ground; the use of specially treated charcoal that locks in carbon; and "enhanced rock weathering" - loosely based on the carbon removal that occurs with natural erosion.
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