Robin KcKie, THE GUARDIAN
Attempts to solve the climate crisis by cutting carbon emissions from only cars, factories and power plants are doomed to failure, scientists will warn this week.
A leaked draft of a report on climate change and land use, which is now being debated in Geneva by the Intergovernmental Panel on Climate Change (IPCC), states that it will be impossible to keep global temperatures at safe levels unless there is also a transformation in the way the world produces food and manages land.
Humans now exploit 72% of the planet’s ice-free surface to feed, clothe and support Earth’s growing population, the report warns. At the same time, agriculture, forestry and other land use produces almost a quarter of greenhouse gas emissions.
In addition, about half of all emissions of methane, one of the most potent greenhouse gases, come from cattle and rice fields, while deforestation and the removal of peat lands cause further significant levels of carbon emissions. The impact of intensive agriculture – which has helped the world’s population soar from 1.9 billion a century ago to 7.7 billion – has also increased soil erosion and reduced amounts of organic material in the ground.
In future these problems are likely to get worse. “Climate change exacerbates land degradation through increases in rainfall intensity, flooding, drought frequency and severity, heat stress, wind, sea-level rise and wave action,” the report states.
Read more at https://www.theguardian.com/environment/2019/aug/03/ipcc-land-use-food-production-key-to-climate-crisis-leaked-report
Karin Brulliard, THE WASHINGTON POST
Gregory Okin is quick to point out that he does not hate dogs and cats. Although he shares his home with neither — he is allergic, so his pets are fish — he thinks it is fine if you do. But if you do, he would like you to consider what their meat-heavy kibble and canned food are doing to the planet.
Okin, a geographer at UCLA, recently did that, and the numbers he crunched led to some astonishing conclusions. America’s 180 million or so Rovers and Fluffies gulp down about 25 percent of all the animal-derived calories consumed in the United States each year, according to Okin’s calculations. If these pets established a sovereign nation, it would rank fifth in global meat consumption.
Needless to say, producing that meat — which requires more land, water and energy and pollutes more than plant-based food — creates a lot of greenhouse gases: as many as 64 million tons annually, or about the equivalent of driving more than 12 million cars around for a year. That doesn’t mean pet-keeping must be eschewed for the sake of the planet, but “neither is it an unalloyed good,” Okin wrote in a study published this week in PLOS One.
“If you are worried about the environment, then in the same way you might consider what kind of car you buy … this is something that might be on your radar,” Okin said in an interview. “But it’s not necessarily something you want to feel terrible about. ”
Read more at: The hidden environmental costs of dog and cat food – The Washington Post
Tim Radford, CLIMATE NEWS NETWORK
US-based research has found that even a modest switch to a more vegetable-based diet could lead to a significant reduction in greenhouse gas emissions.
Scientists have worked out how to combat climate change and improve human health, one mouthful at a time.
The answer is a familiar one: they calculate that a relatively modest switch towards a more vegetable-based diet could, in the US at least, lead to a reduction of 222kg in greenhouse gas emissions per person per year, while cutting the relative risk of coronary heart disease, colorectal cancer and type 2 diabetes by 20% to 40%.
It could also reduce US healthcare costs by at least $77bn a year and possibly $93bn.
The US spends $3tn on healthcare every year – 18% of gross domestic product – and a significant proportion of health costs are associated with obesity and illnesses linked to diet.
Read more at: Healthy diet good for climate change – Climate News NetworkClimate News Network