Carbon dioxide has been pumped underground and turned rapidly into stone, demonstrating a radical new way to tackle climate change.
The unique project promises a cheaper and more secure way of burying CO2 from fossil fuel burning underground, where it cannot warm the planet. Such carbon capture and storage (CCS) is thought to be essential to halting global warming, but existing projects store the CO2 as a gas and concerns about costs and potential leakage have halted some plans.
The new research pumped CO2 into the volcanic rock under Iceland and sped up a natural process where the basalts react with the gas to form carbonate minerals, which make up limestone. The researchers were amazed by how fast all the gas turned into a solid – just two years, compared to the hundreds or thousands of years that had been predicted.
“We need to deal with rising carbon emissions and this is the ultimate permanent storage – turn them back to stone,” said Juerg Matter, at the University of Southampton in the UK, who led the research published on Thursday in the journal Science.
Matter said the only thing holding back CCS was the lack of action from politicians, such as putting a price on carbon emissions: “The engineering and technology of CCS is ready to be deployed. So why do we not see hundreds of these projects? There is no incentive to do it.”
Continue reading “CO2 Turned Into Stone In Iceland In Climate Change Breakthrough”
On the International Day of Biological Diversity, Greenpeace’s Kumi Naidoo exhorts us to move away from our current farming system
On today’s United Nations biodiversity day, we are being asked to focus on small islands and their unique ecology and fragility in times of globally pervasive threats such as climate change.
But, the whole planet is a small island in the vast sea of space, capable of producing food for all as a consequence of rich biodiversity. That diversity is under threat, our actions can strengthen it or weaken it. Our agriculture systems can help mitigate climate change and feed us, or they can accelerate the change and contribute to hunger.
The food system we choose has a direct impact on which type of world we will have. It’s the difference between a field that hums and is robust with life, or one which is dusty, dry and dead. It’s the difference between a place where ecological farming has been used or where a cocktail of industrial chemicals has soaked into the soil where the same crop is grown, decade after decade.
Our current food and farming system is creating more and more of these dry, dead ends. It is agriculture characterised by three things: the industrial-sized growing of a single plant, or “monoculture”, genetically engineered crops, and repeated toxic chemical infusions of pesticides and the application of synthetic fertilisers. All of these harm people and the farming ecosystems they depend on.
Continue reading “Our Food System Affects Biodiversity: Do We Want Monocultures?”
Leaked text of blockbuster report says changes in climate have already caused impacts on natural and human systems
Climate change has already left its mark “on all continents and across the oceans”, damaging food crops, spreading disease, and melting glaciers, according to the leaked text of a blockbuster UN climate science report due out on Monday.
Government officials and scientists are gathered in Yokohama this week to wrangle over every line of a summary of the report before the final wording is released on Monday – the first update in seven years.
Nearly 500 people must sign off on the exact wording of the summary, including the 66 expert authors, 271 officials from 115 countries, and 57 observers.
But governments have already signed off on the critical finding that climate change is already having an effect, and that even a small amount of warming in the future could lead to “abrupt and irreversible changes”, according to documents seen by the Guardian.
“In recent decades, changes in climate have caused impacts on natural and human systems on all continents and across the oceans,” the final report from the Intergovernmental Panel on Climate Change will say.
Continue reading “IPCC Report: Climate Change Felt On All Continents And Across The Oceans”