2018/10/04: World greenhouse gas emissions must peak by 2020 - just 15 months from now.
According to a U.N. preview of the report, meeting the 1.5 goal would “require very fast changes in electricity production, transport, construction, agriculture and industry” worldwide, in a globally coordinated effort to bring about a zero-carbon economy as quickly as possible. It would also very likely require eventually removing huge amounts of carbon dioxide from the atmosphere using technology that is not currently available at the scale that would be necessary. And there’s no time to waste: “The longer CO2 is emitted at today’s rate, the faster this decarbonization will need to be.”
The world has already warmed by about 1.1 degrees C, and the implications of that are increasingly obvious. In just the three years since the Paris Agreement was signed, we’ve seen thousand-year rainstorms by the dozens, the most destructive hurricane season in U.S. history, disastrous fires on almost every continent, and an unprecedented coral bleaching episode that affected 70 percent of the world’s reefs.
In this age of rapid warming, the IPCC report is inherently political — there are obvious winners and losers if the world fails to meet the 1.5-degree goal. If the world’s governments are to take the implications of IPCC’s findings seriously, it would be nothing less than revolutionary — a radical restructuring of human society on our planet.
2018/09/30: Agriculture has historically been a circular industry where crops use nutrients in the soil to grow which are then replaced through compost or manure. But globalisation and industrialisation of the food supply chain has disrupted this cycle, driving farming practices that have helped degrade a third of the planet’s land.
Scientists are now looking at ways of tackling this problem with an approach that will not only restore nutrients to the soil but also help to offset the greenhouse gas emissions produced by agriculture.
‘Farm land could work as carbon sinks,’ said Dr Jan Mumme, an agricultural engineer at the University of Edinburgh in the UK. ‘This probably wouldn’t work with intensive livestock farming, but sustainable crop production and integrated farm systems (a balance between crops and livestock) could do it – and biochar is one way to help.’
Biochar is a substance formed of biomass – such as wood and crop waste, sewage sludge and paper waste – that is heated to 400-800°C under limited oxygen conditions to make a charcoal-like product. This can be then added to soil, where it not only stores carbon, but also interacts with microbes in the soils to improve their ability to capture additional nutrients and soil carbon.
Until now, however, biochar has received mixed results when tested for its effects on soils and crop yields.
Lo scorso anno i progetti per la cattura e il sequestro di anidride carbonica hanno raccolto 23,5 miliardi di dollari, esattamente la stessa cifra del 2010. Un rapporto del World Watch Institut ROMA - Il sex appeal del Ccs sembra essere svanito. Stando a un dossier realizzato dal World Watch