"The cycle of carbon between the Earth’s surface and its deep interior is a key component of our goldilocks planet. Without it we would not have life or water on the planet today. Natural carbon burial has provided us with the fossil fuels we have used to develop our technologically advanced society, but through greenhouse gas emissions, it is also rapidly starting to degrade the quality of life on the planet. To bring this cycle back into balance we need not only to cut emissions but also accelerate the natural return of CO2 back to the Earth. There is a plethora of methods for doing this. In the 7th discussion in the Oxford Net Zero Series, hosted by the Oxford Martin School, Professor Mike Kendall, Professor Joe Cartwright and Dr Tom Kettlety will discuss sub-sea storage of CO2."

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"The Intergovernmental Panel on Climate Change reports that 23% of greenhouse gas emissions come from land use and land-use change. Any credible pathway to net-zero must include ending deforestation and the degradation of natural ecosystems plus reducing emissions associated with agricultural production and food systems. In fact, most net-zero scenarios include significant “removals” of CO2 from the atmosphere via reforestation and ecosystem restoration.The way we use land will be doubly important over the next decade; not only because it has an impact on greenhouse gas emissions, but also because we need to offset emissions from sectors in which carbon reduction is more difficult and requires long-term technological transformation. The task of transforming the energy and land-use sectors in tandem will require supportive economic and social policy frameworks."

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"In British Columbia, there’s a little valley where the Squamish River snakes down past the cliffs of the Malamute, a popular hiking spot. The hills in all directions are, like much of BC, thickly forested with firs. And nestled in that valley is a newfangled industrial plant that aims to replicate what those millions of trees do: suck carbon dioxide out of the air. The plant was built by Carbon Engineering, a pioneer in the technology known as direct air capture (DAC). In a long, squat building, a huge ceiling fan draws air inside, where it reacts with a liquid chemical that grabs hold of CO2 molecules.This “sorbent” flows into a nearby machine that transforms the gas, which is then stored in pressurized tanks. The goal is to help rid the atmosphere of its most ubiquitous climate change culprit. The Squamish plant will process up to 1,000 metric tons of CO2 annually. That’s a minuscule drop in the bucket of the planet’s annual emissions, an estimated 33 billion metric tons last year, but this plant is only a pilot facility."

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"Filled with microscopic holes and channels, these ultraporous minerals can soak up environmental contaminants, filter drinking water, manage nuclear waste and even absorb carbon dioxide (CO₂).Now, in the first study of its kind, Northwestern University researchers have analyzed ancient zeolite specimens collected from the edges of East Iceland to discover that zeolites separate calcium isotopes in a wholly unexpected way."

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