What is ‘soil carbon’, and why are we hoping it will mitigate climate change?

A major part of the federal government’s net zero plan is soil carbon sequestration. What is soil carbon, and can it really live up to the hype? What is soil carbon? Soil carbon is, in a sense, exactly what it says on the tin: the element carbon, stored in soils. “Carbon is a critical part … Continue reading What is ‘soil carbon’, and why are we hoping it will mitigate climate change?

The great carbon capture and storage debate: can Santos make it work?

This article on Santos’ carbon capture and storage project first appeared in Cosmos Weekly on 22 October 2021. When Sylvia Little fried her eggs at her Adelaide home one November morning in 1969, she became Santos’s first customer for natural gas from Moomba, 800 kilometres north in the Strzelecki Desert. Today, in subterranean reservoirs depleted … Continue reading The great carbon capture and storage debate: can Santos make it work?

Out of thin air: direct carbon capture is on the horizon

An Australian company could be selling modules that suck carbon dioxide directly from the air as early as next year, but it will be up to the highest bidder to decide what happens to that CO2 once it’s been captured. Melbourne-based Southern Green Gas (SGG) has just announced a partnership with Swiss Re, a multinational … Continue reading Out of thin air: direct carbon capture is on the horizon

Cleaning up the greenhouse

To stave off dangerous levels of global warming in the next 80 years, scientists warn, it won’t be enough just to reduce today’s levels of greenhouse gas emissions, or even cut them to zero. Instead, says climate scientist Bill Collins of America’s Lawrence Berkeley National Laboratory (‘Berkeley Lab’), we will eventually need to start removing … Continue reading Cleaning up the greenhouse

Less carbon = greater food cost?

A Swiss study has found that using carbon dioxide removal alone to mitigate agricultural emissions is likely to increase food costs. Carbon dioxide removal – or CDR – is often touted as a solution for industries that can’t easily reduce their emissions. What is carbon dioxide removal? Also called negative emissions technology, CDR is a … Continue reading Less carbon = greater food cost?