PFAS, a group of manufactured chemicals commonly used since the 1940s, are called "forever chemicals" for a reason. Bacteria can't eat them; fire can't incinerate them; and water can't dilute them. And, if these toxic chemicals are buried, they leach into surrounding soil, becoming a persistent problem for generations to come. Now, Northwestern University chemists have done the seemingly impossible. Using low temperatures and inexpensive, common reagents, the research team developed a process that causes two major classes of PFAS compounds to fall apart, leaving behind only benign end products. - Phys.org

Up to 40% of the global terrain has already been devalued, mainly through modern agriculture. If nothing changes, then an additional area of land the size of South America will be damaged by 2050. But if lands are restored and protected, they could help contain climate change and species loss. A report outlines the damage that's already been done but also offers hope that improvements in how we manage the land environment can offer a better future. - BBC

With soils rich for cultivation, most land in the Midwestern United States has been converted from tallgrass prairie to agricultural fields. Less than 0.1 percent of the original prairie remains. This shift over the last 160 years has resulted in staggering, and unsustainable, soil erosion rates for the region, researchers report in the March Earth’s Future. The erosion is estimated to be double the rate that the U.S. Department of Agriculture says is sustainable. If it continues unabated, it could significantly limit future crop production, the scientists say.  “These rare prairie remnants that are scattered across the Midwest are sort of a preservation of the pre-European-American settlement land surface,” says Isaac Larsen, a geologist at the University of Massachusetts Amherst. - Science News

Earthworms could have the potential to replace some high-cost mineral/synthetic fertilizers, new research suggests. Researchers at University College Dublin have unearth fresh insight into the soil dweller's importance for crops taking up nutrients. The findings suggest a shortcut in the soil nitrogen cycle not previously recognized in which earthworms, when they are active, rapidly enrich soil and plants through nitrogen excreted in their mucus. The role of soil animals such as earthworms in nutrient cycling is traditionally seen as beneficial but indirect, slow and cumulative.- Phys.org

Corporate consolidation—in which mergers and acquisitions of smaller companies lead to fewer, larger companies—has been a trend for decades in areas ranging from retail to technology. This consolidation gives some corporations outsize power, a consequence President Biden addressed in his 2021 executive order seeking to curb the “excessive concentration of industry”  The food and agriculture sector is no exception to this troubling trend, and the consequences can be far-reaching. For example, recent research has shown that the nation's largest meat and poultry producer, Tyson Foods (Statista 2022), has monopoly-like power that threatens the health, safety, and well-being of chicken farmers, workers, and communities in numerous ways (Boehm 2021a). Another recent study showed how corporate consolidation in the US food system has increased food prices and decreased food access . - UCS

Inflation may be at a 40-year high, but the cost of grazing on public lands is lower now than it was 40 years ago, in 1981. Last week, the Bureau of Land Management and Forest Service announced federal grazing fees for 2022: Just $1.35. Grazing fees dictate how much ranchers pay for each “animal unit” — one cow and calf, one horse or five sheep — per month. This year’s fee — just $1.35 per animal unit — keeps the grazing costs at the same rate since 2019, when Trump’s BLM lowered the fee from $1.41. Fees apply to roughly 18,000 BLM grazing permits and leases and 6,250 Forest Service permits; income is funneled to rangeland betterment funds, the U.S. Treasury, and the states where the grazing occurs. - High Country News

Almost 10% of the 8 billion people on earth are already undernourished with 3 billion lacking healthy diets, and the land and water resources farmers rely on stressed to “a breaking point.” And by 2050 there will be 2 billion more mouths to feed, warns a new report from the United Nations Food and Agriculture Organization (FAO). For now, farmers have been able to boost agricultural productivity by irrigating more land and applying heavier doses of fertilizer and pesticides. But the report says these practices are not sustainable: They have eroded and degraded soil while polluting and depleting water supplies and shrinking the world’s forests. - Yale Climate Connections

The biggest global agriculture companies are competing on a new front: enticing farmers to join programs that keep atmosphere-warming carbon dioxide in the soil. Fertilizer producers and seed and chemical dealers are paying growers for every acre of land dedicated to trapping carbon underground, known as sequestering it. The companies' ambitions stretch from the United States to Canada, Brazil, Europe and India, executives told Reuters. Farmers capture carbon by planting off-season crops, tilling the ground less and using fertilizer more efficiently. They log their practices on digital platforms to generate a carbon credit. Agricultural companies use the credits to offset the climate impact of other parts of their businesses or sell them to companies looking to reduce their own carbon footprints. Agriculture covers nearly 40% of the world's land and is responsible for 17% of global emissions, according to the United Nations. Changes to farm practices could sequester as much as 250 million tonnes of carbon dioxide annually in the United States, or 4% of the country's emissions, according to a 2019 report by the National Academy of Sciences.- Reuters

Most commercial crops provide only one harvest and must be replanted every year. Growing these foods on an industrial scale usually takes huge amounts of water, fertilizer and energy, making agriculture a major source of carbon and other pollutants. Scientists say this style of farming has imperiled Earth’s soils, destroyed vital habitats and contributed to the dangerous warming of our world.But Kernza, a domesticated form of wheatgrass developed by scientists at the nonprofit Land Institute, is perennial. A single seed will grow into a plant that provides grain year after year after year. It forms deep roots that store carbon in the soil and prevent erosion. It can be planted alongside other crops to reduce the need for fertilizer and provide habitat for wildlife. In short, proponents say, it can mimic the way a natural ecosystem works, potentially transforming farming from a cause of environmental degradation into a solution to the planet’s biggest crises. - Washington Post

Agriculture already uses almost half of the world’s vegetated land. It consumes 90 percent of all the water used by humanity and generates one-quarter of the annual global emissions that are causing global warming. And yet of the seven billion people living today, 820 million are undernourished because they don’t have access to—or can’t afford—an adequate diet.  “We have to produce 30 percent more food on the same land area, stop deforestation, [and] cut carbon emissions for food production by two-thirds,” says Waite in an interview.  All of that must be done while reducing poverty levels and the loss of natural habitat, preventing freshwater depletion, and cutting pollution as well as other environmental impacts of farming.​- National Geographic

Years of recreational shooting left hazardous levels of lead in the soil of a parcel of land in the White Tank Mountains, and the site west of Phoenix will remain closed for three more years for cleanup.  The area was shuttered to recreational shooting after a pregnant woman was killed by a stray bullet more than three years ago.  The multimillion-dollar remediation effort comes as Buckeye aims to lease the land from the federal Bureau of Land Management for a park. It's an area that public safety officials previously describe as "a mess" because of the number of people shooting at all hours, in all directions. - AZ Central

The vast majority of land on Earth — a staggering 97 percent — no longer qualifies as ecologically intact, according to a sweeping survey of Earth’s ecosystems. Over the last 500 years, too many species have been lost, or their numbers reduced, researchers report April 15 in Frontiers in Forests and Global Change. Of the few fully intact ecosystems, only about 11 percent fall within existing protected areas, the researchers found. Much of this pristine habitat exists in northern latitudes, in Canada’s boreal forests or Greenland’s tundra, which aren’t bursting with biodiversity. But chunks of the species-rich rainforests of the Amazon, Congo and Indonesia also remain intact. - Science News

State officials are putting farmers in south-central Arizona on notice that the continuing drought means a “substantial cut" in deliveries of Colorado River water is expected next year.  A statement issued Friday by the state Department of Water Resources and the Central Arizona Project said an expected shortage declaration “will result in a substantial cut to Arizona’s share of the river, with reductions falling largely to central Arizona agricultural users." - AZ Family

More than a third of farmland in the U.S. Corn Belt, nearly 100 million acres, has completely lost its carbon-rich topsoil due to erosion, according to a new study published in the journal PNAS.  The loss of topsoil has reduced corn and soybean yields in the Midwest by 6 percent, resulting in a loss of nearly $3 billion a year for farmers, and increased runoff of sediment and nutrients into nearby waterways, worsening water quality.  The study found that the greatest loss of carbon-rich topsoil was on hilltops and ridge lines indicating that tillage, or the repeated plowing of fields, was largely to blame as loosened soils moved downslope. The research also found that this erosion has removed nearly 1.5 petagrams of carbon from hills in the Corn Belt. Restoring the topsoil, the study’s authors argued, could help productivity and potentially turn agricultural fields into carbon sinks. - YaleEnvironment360