As worldwide demand for meat and dairy continues to grow, so does evidence showing animal agriculture, as currently practiced, is harming the environment.
Advocates are making the case for widespread adoption of a vegan diet, avoiding animal products, as better for individual health and the environment. It is estimated between 11% and 20% of all greenhouse-gas emissions worldwide come from animal agriculture and livestock grazing has degraded up to 20% of the world's pastures.
Marco Springmann, research fellow in climate change, food systems and health at University College-London and senior environment and health researcher at Oxford University, said a vegan diet would bring a number of benefits.
"Adoption of a completely plant-based, or vegan, diet has many health, environmental and even cost benefits," Springmann explained. "If more people adopted such a diet, it would result in general benefits for climate change, land use as well as population health."
Maryland is home to more than 160,000 cattle, with a $91 million beef cattle industry and a $185 million dairy industry.
Veganism has attracted more attention in recent years, thanks in part to advancements in lab-grown meat technology; however, it's still not a very popular diet, with surveys indicating fewer than 5% are vegan. The prospect of billions of people deciding to eliminate animal products from their diets seems unlikely. Feeding a vegan world would require growing many more plants than we do now.
Springmann pointed out there is enough cropland to meet the nutritional needs of Earth's population through plants alone.
"At the moment, we feed about a third of all grains to livestock," Springmann emphasized. "Which means that if we wouldn't have so much livestock anymore, we actually would have lots of cropland available to grow other things in addition to not having, for example, all this need for pastures anymore."
He said if we shifted to a healthy plant-based diet, then we would still have a net reduction in global cropland use of about 10%.
Benefits of a global vegan diet include an estimated 3 billion hectares of land freed up for other purposes and a 6 billion-ton reduction of greenhouse-gas emissions annually. It is also estimated more than 2 million additional hectares of tropical rainforest would be preserved each year. Springmann added another benefit is cost.
"If you recompose your diet to something that is not made up of those processed products but is just generally healthy, then we calculated that purely on the cost of ingredients, a plant-based diet might actually be much cheaper," Springmann stressed. "Up to a quarter or even a third in high-income countries."
This story is based on original reporting by Seth Millstein at Sentient.
get more stories like this via email
Atlantic menhaden weigh less than a pound and measure little more than a foot long but the small fish has big consequences for the Chesapeake Bay ecosystem.
A bill introduced in the Virginia General Assembly is looking to study the Atlantic menhaden population in the Chesapeake. There is little data on Atlantic menhaden populations in the Bay and fishing and conservation groups say that's the problem.
Jaclyn Higgins, forage fish program manager for the Theodore Roosevelt Conservation Partnership, said menhaden populations are not well-researched in the Bay, despite studies on the species along the entire Atlantic coast.
"There were a couple studies kind of done throughout the last 20 years but nothing super comprehensive and nothing that would allow us to say this is the amount of menhaden that we would consider healthy for the Chesapeake Bay," Higgins explained. "Really, we don't know anything about Chesapeake Bay menhaden."
The bill would provide $3 million for the study of menhaden populations in the Chesapeake. The research would look at if reduction fishing, which pulls millions of pounds of menhaden out of the Bay each year, is leading to local depletion.
But why is such a small fish so important to the Chesapeake Bay environment? Higgins pointed out Atlantic menhaden are a keystone species for the rest of the Chesapeake food chain.
"They make up the base of the marine food chain along the Atlantic, but in particular, in the Chesapeake Bay," Higgins emphasized. "They are a primary food source for striped bass. Striped bass are really reliant on menhaden as a food source in those juvenile and adult stages while they're in the bay."
Disclosure: The Theodore Roosevelt Conservation Partnership contributes to our fund for reporting on Climate Change/Air Quality, Endangered Species and Wildlife, Environment, and Public Lands/Wilderness. If you would like to help support news in the public interest,
click here.
get more stories like this via email
A new report showed a growing problem of harmful pesticides in Connecticut waterways.
The University of Connecticut study analyzed 20 years of data, finding neonicotinoids are increasingly prevalent in the state's waterways. Levels of the pesticides in rivers are higher than Environmental Protection Agency standards.
Louise Washer, organizer for the environmental advocacy coalition Connecticut Pesticide Reform, said the pesticides harm river-dwelling mayflies.
"We see a quarter of the mayflies in the Norwalk River, for example, than were observed in 1989," Washer reported. "We see a third of the richness of mayfly species than were observed in 1989."
While many factors affect mayflies' population numbers, their sensitivity to neonics is a major factor in population decline. As comprehensive as the report is, Washer argued more testing is needed in certain places. Previous reports showed the chemicals have vast human health effects.
Connecticut lawmakers introduced bills banning neonicotinoids in previous legislative sessions. Despite widespread support, they never made it out of committee.
Neonicotinoids have been banned or heavily restricted in numerous areas for the harmful effects they have on wildlife. The pesticides are commonly used, which is one of the biggest hurdles to banning them. Connecticut golf courses are the heaviest users of neonicotinoids for grub control and farmers use seeds coated with them for pest control.
Washer pointed out there are some better ways to use pesticides.
"Integrated pest management is a term that means treating pests that are actually present and using the least toxic pesticide available to do that," Washer explained. "The problem with some of these prophylactic uses is that integrated pest management kind of gets thrown out the window because you're using the stuff whether there's a problem or not."
Products like Grub Gone are less toxic than neonics for lawn care. As for treated seeds, Washer pointed to another pesticide called diamides. Though it's less toxic to bees, it poses higher risks to butterflies and moths. The hope is more sustainable practices protect birds, pollinators and human health.
get more stories like this via email
Days before the end of his term, President Joe Biden announced sweeping protections for the nation's coastlines.
President Donald Trump has vowed to retract them.
Biden used the Outer Continental Shelf Lands Act to withdraw large portions of the areas from being leased for future oil and gas drilling. The protected areas include Maryland, as part of the entire Atlantic coast, plus the U.S. Pacific coast, eastern Gulf of Mexico and parts of the Northern Bering Sea near Alaska.
Robert Percival, director of the environmental law program at the University of Maryland, said Trump tried to repeal coastline protections in his first term and got some pushback.
"It would be difficult," Percival explained. "When Trump tried to roll back, during his first term, some areas that had been protected by previous presidents, a judge said that the Act did not clearly give the president the authority to roll them back. So, it's kind of an open legal question."
This week, on his first day in office, Trump announced he has rescinded Biden's protections for the Outer Continental Shelf. Percival predicted there will likely be legal challenges.
Percival added every president, including Trump, has used the law to protect some parts of the Outer Continental Shelf, noting it is difficult to bounce between protecting land and rescinding protections.
"Once you develop it, then it's not going to be pristine," Percival stressed. "That's one of the reasons why it's important to have durable environmental protections, so that you aren't constantly changing the character of the lands and creating new risk."
Oil production across the country is at a record high, and the Outer Continental Shelf currently accounts for nearly 15% of U.S. oil production. Energy companies have yet to start production on more than 80% of the 12 million acres already under lease, according to the U.S. Department of the Interior.
get more stories like this via email