The addition of 3-Nitrooxypropanol to the feed of dairy cows reduced their enteric methane emissions by about 25% in a recently published study—one in a series of Penn State studies of the investigational substance in the United States—which might be an early step toward it being approved for use in this country.
On 19 Nov 2019, guidelines were published in the Annals of Internal Medicine that caused a backlash, and now a backlash on the backlash is occurring. The abstract to the original 2019 Annals article, titled Unprocessed red meat and processed meat consumption: Dietary guideline recommendations from the Nutritional Recommendations (NutriRECS) Consortium, had the following results and recommendations to report.
A new scientific article from the Feed the Future Innovation Lab for Livestock Systems has four big messages: (1) Meat, offal, milk, eggs and fish are vital to—and missing from—the diets of nearly 800 million people. (2) ‘Animal-sourced foods’ are the best sources of high-quality nutrient-rich food for toddlers 6–23-months old. (3) The harms caused by livestock and animal-sourced foods to human and planetary health are overstated. (4) Sustainable development must address the needs of the poorest and most vulnerable people in the world.
A new paper by scientists at the International Food Policy Research Institute (IFPRI) and Tufts University analyses the costs of adopting the ‘universal reference diet’ recommended for both human and planetary health by the EAT-Lancet Commission (Willett et al., Food in the Anthropocene: the EAT–Lancet Commission on healthy diets from sustainable food systems, 16 Jan 2019). Such a diet, report the paper’s authors, is beyond the means—indeed, it exceeds the total household per capita incomes—of more than one and a half billion people today.
Results of a new IFPRI study on ‘relative caloric prices’ show that many healthy foods are much more expensive in poor countries, while many unhealthy foods are much cheaper in richer countries.
In the excerpts below, Alexandra Sexton, geographer and postdoctoral researcher at the University of Oxford, offers ‘a more nuanced reading of the promissory and counter-narratives around recent alternative proteins than has sometimes been relayed in public discussions on this topic.’
New findings suggest that more intensive agriculture might be the “least bad” option for feeding the world while saving its species—provided use of such “land-efficient” systems prevents further conversion of wilderness to farmland.
Published by the Institute on the Environment at the University of Minnesota, Environment Reports is a collaboration between an international group of scientists, writers, and designers to combine incisive narratives about environmental challenges, backed up by cutting-edge data. Food Matters, the first report, focuses on the sustainability of our global food system. The article below—Is climate change a risk to global grazing lands?—is reproduced here by permission.
A new research paper by Michigan State University scientists analyses the impacts of soil carbon sequestration on life cycle greenhouse gas emissions in Midwestern USA beef finishing systems and finds that eEmissions from the multi-paddock grazing system were offset completely by soil carbon sequestration and that soil carbon sequestration from well-managed grazing may help to mitigate climate change.
We found that areas where livestock grazing is an important part of local food availability (Fig. 3, dark red) and economies (dark blue) experience the highest levels of CVP (coefficient of variation of precipitation).