MOOVE over cows, there’s a new
milk provider in town!

“Milk, it does a body good” is a vintage 1980s advertising slogan used to emphasize the health benefits of cow’s milk on the human body. Milk is still packed with loads of nutritional value required for optimal health, but the next time your palate craves an icy, cold glass of refreshing milk, consider a shift in sourcing from animals in green pastures to those wandering the dunes.

According to Home Food and Agriculture Organization of the United Nations, milk offers 48 percent of the protein and 9 percent of the calories a child of 5 to 6 years with light physical activity needs. Cow’s milk is packed with 13 essential vitamins and nutrients like calcium and vitamins A and D that contribute to a healthy diet.

But the impact of the dairy industry on the environment and the subsequent impact of the environment on dairy farms has farmers shifting to camel-milk production to meet demand and their environmental commitments.

It seems camel milk can provide the health benefits of cow’s milk and then some with the bonus of a much lower carbon hoofprint.

THE ENVIRONMENT TAKES THE HIT

With 270 million dairy cows producing milk along with 2.1 gigatons of carbon dioxide every year, the dairy industry is responsible for 30 percent of all anthropogenic emissions. The environmental impact is ample, and with dairy product demand expected to triple by 2050 due to population growth and increased consumption, it is primed to worsen.

Primarily, methane emissions are a ruminant’s worst offender. Methane is produced in the digestive process and expelled into the atmosphere through cows belching, accounting for 20 percent of total global emissions. What’s worse: It’s 20 times more potent than carbon dioxide.

IMAGE: Unsplash

To be fair, all livestock emit their fair share of methane but pound for pound, camels are the eco-friendlier option.

Emissions aren’t the only environmental issue with dairy farming — there’s also land use to grow feed, pesticides for those crops, and all the water required to get milk from cow to shelf.

WHAT-ER?

The average water volume used to produce 1 liter of milk, including to grow the livestock feed, is 911 liters. This will differ between farms but it’s a big ratio, and when water supplies are also threatened, the cost could escalate.

Water pollution due to manure mismanagement can also impact surrounding water supplies. Overflowing and cracking manure vats sometimes cause seepage and, subsequently, groundwater contamination. This makes its way over time to all manner of bodies of water including rivers and oceans.

IMAGE: Unsplash

Camels, however, require significantly less water and can go two weeks without any, compared with two days for a cow. With a high threshold for extreme conditions, and the ability to lose 30 percent of their body weight and still survive, camels emerge as a definitively more resilient choice as global temperatures rise and food security becomes a pressing concern.

Food security is also impacted by the abundant land mass required to meet the nutrition needs of grazing animals and the pastures for grazing. This leads to not only extensive deforestation but the knock-on effects of further emissions and impacts on biodiversity and ecosystems.

Whereas camels can eat almost any plant that grows where they live. Their long necks also mean they can reach higher for trees and will happily snack on shrubs, grass or even thorny plants.

Camel milk sounds like the clear winner when it comes to nutrition and sustainability, but it’s not easy to transition a massive industry. Dairy farms have been around for generations and in many cases are still family businesses. Plus, in places rich with grasslands and more temperate weather, cow farms still make sense. But when it’s more a matter of survival than that of public buy-in, people find a way.

FARMS IN AMERICA ARE LEADING THE CHARGE HERE

Historically, cows have been an essential part of many African economies, diets and traditions but heading into what could be another year of drought, the Horn of Africa and surrounding areas are in a state of emergency. A three-year drought that began in 2020 resulted in crop destruction, loss of grazeable land, livestock depletion and dried-up water sources.

Camel milk offers a lot of benefits, but the key is a stable market.

James Salfer, dairy educator-University of Minnesota Extension

In Samburu, a Kenyan county with a population of almost 310,000, people were struggling with malnutrition as most of their cattle perished.
Cattle farmers noticed neighboring villages with camel farms struggled very little, however.

The government had started a camel program offering one camel to each person eight years prior. So far, 4,000 camels have been gifted. Other African countries are also seeing their camel populations grown.

CAMELS TRAVEL TO AMERICA

Camel farms are not limited to sub-Saharan African countries — they’re also gaining popularity in the United States.

A 35-acre family farm in Nebraska called Camelot Camel Dairy offers camel milk to consumers who struggle with milk allergies or who just might be curious and somewhat adventurous. They are one of only two licensed camel-milk providers in the country and are hopeful that with demand, the price of a liter of milk, currently U.S.$16, will eventually become affordable and accessible.

“Camel milk offers a lot of benefits, but the key is a stable market. Farmers need assurance of demand, and consumers must be willing to pay the price of what it costs to raise and milk camels,” says James Salfer, a University of Minnesota Extension dairy educator.

The global camel-milk trade could exceed U.S.$13 billion by the end of the decade, up from $1.3 billion in 2022.

Erythritol isn’t just for sweetening
your coffee

The sugar alcohol used as a low-calorie sweetener could also be important to heat transport and storage with implications for industrial and residential energy systems, according to a recent study.

The research examines erythritol-based phase change material (PCM) slurries for waste heat recovery, focusing on how varying carrier fluid concentrations affect their flow properties.
Erythritol-based PCM slurries are a type of thermal storage material used to absorb and release heat efficiently.

When heated, erythritol particles in the liquid slurry melt and absorb heat. When cooled, they solidify and release heat. This cycle helps regulate temperature in applications such as cooling systems, industrial-heat recovery and renewable-energy storage.

Because of its efficiency, it can absorb and release a lot of heat without requiring large energy volumes and doesn’t degrade. And because it’s a liquid, it can be pumped through systems.

By improving the understanding of these slurries’ flow behavior, the research paves the way for optimizing energy-efficient thermal-transport technologies, reducing waste-heat losses and enhancing sustainability in energy-intensive industries.

More like this: Cool it, sunshine

A greener education

Countries, governments, corporations and nonprofits around the globe are working to reduce green-house gas emissions and fight against climate change.

But on a smaller scale, what can be done?

Students at Al Dhafra Private Schools-Abu Dhabi are taking their climate action goals to the bank — First Abu Dhabi Bank (FAB), to be precise.

FAB, in partnership with Emirates Foundation, recently held its Climate Action competition, challenging schools in the Emirate to act against climate change and offered a cash prize to put those plans to work.

The competition, made up of two themes and consequently two winners, offered AED 200,000 in prize money to each of the winning teams to bring their plans to fruition.

After passing the first round of the competition that included approximately 700 schools, the Al Dhafra Schools-Abu Dhabi’s high school students were shortlisted along with four others to present their full strategy, says Nosheen Riaz, the school’s head of sustainability.

CAPTION: Climate Action Event

The team, made up of grades 11 and 12 students, put together a comprehensive project and business plan that includes solar panels; kinetic energy generation via stationary bikes; a greywater-recycling system for garden irrigation and restroom flushing; a custom-built interactive app tracking impact and setting sustainability challenges; and sustainability education through gamification.

The team will also focus on involving parents with events such as uniform swaps and awareness activities.

“Putting together the proposal and business plan really pushed us to think like real-world problem-solvers. It wasn’t just about having a good idea — it was about learning how to communicate it, back it up with research, and present it professionally. It taught us the importance of planning, teamwork and staying committed to a vision we believe in,” said team member Laura Gutierrez.

The team aims to implement the project in full within 10 months.

“Knowing that we now have the financial support to bring our idea to life is empowering,” says Roy Jean Kattar, another team member. “It means our efforts can actually lead to real change. We’re not just talking about sustainability — we’re doing something about it, and that’s an incredible feeling.”

See the winning announcement here: Al Dhafra Private Schools-Abu Dhabi winners

The winning team for the other category, Climate Conscious Children, went to Al Nahda National School for Boys for their Eco-Posts Mobile App.

More like this: How Coldplay takes sustainability on tour

Air pollution impairs cognitive
function

Breathing polluted air can impair cognitive function within just four hours, according to a new study published in Nature Communications.

Researchers at the University of Birmingham and University of Manchester found that short-term exposure to fine particulate matter (PM2.5) significantly reduces selective attention and the ability to recognize emotions. The findings suggest that even brief encounters with air pollution can affect higher-level brain functions.

The study tested 26 adults under controlled conditions, exposing them to either clean air or high levels of particulate pollution for one hour. Cognitive tests before and after exposure showed that participants had more difficulty focusing and interpreting facial expressions after breathing polluted air.

The researchers highlighted the need for further research into PM2.5 and its effects on brain health, especially long-term.

How Coldplay takes sustainability on tour

With 45,000 other fans, I went to a Coldplay concert last month. It had been 20 years since my last one and this time was a very different experience. The technology wasn’t just a flashy addition, it was an essential part of the sustainable show.

Concert-related CO2 emissions come from a wide range of sources — travel, ticketing, audience electronics, energy consumption for staging, lighting, sound, ventilation, hotel stays for attendees, band members, and crew, as well as waste from packaging and plastics.

After launching “Everyday Life” in 2019, Coldplay told the BBC that they would stop touring until they could ensure it could be done sustainably.

“We’re taking time over the next year or two to work out how our tour can not only be sustainable but how it can be actively beneficial,” frontman Chris Martin said.

Fast forward to 2021 and the announcement of their Music of the Spheres Tour, where the band vowed to cut direct carbon emissions by 50 percent, covering every aspect of production and travel.

Among the innovations used to cut their carbon emissions: Energy centers placed around each venue consist of 44 sustainable tiles for fans to dance on and 15 kinetic bikes that generate energy to help power the show. Data collected from these centers records the amount of energy produced during specific songs, shows and across tours.


“From collecting unprecedented amounts of data to taking specific actions today based on rigorous analysis, Coldplay is modelling a trajectory toward a low-carbon, biodiverse and equitable future.”

John E. Fernández, director of the MIT Environmental Solutions Initiative


On average, these installations — along with solar panels set up around the stadium — generate about 17 kWh each night, enough to power the center stage.

The band also encourages concertgoers to use public transportation and shuttle buses organized for the event; set up water stations around the venue; and requests that fans bring refillable bottles.

Every flight, including freight and charter, uses sustainable aviation fuel, and the stage is built with reusable and recycled lightweight materials.

In 2023, the band reported powering 18 shows from a portable battery system made from recycled BMW i3 batteries. Over 2022–2023, they also achieved a 59 percent reduction in CO2 emissions compared to their 2016 tour.

But it’s not all about direct emissions and energy consumption.

Coldplay also focuses on food and waste management. So far, 72 percent of all tour waste has been sent for reuse, recycling or composting. They’ve also donated nearly 10,000 meals from tour catering to the homeless over the same two-year period.


For each ticket sold, a tree is planted, and the band partners with several sustainability-focused organizations, including ClientEarth and One Tree Planted. To top it all off, Coldplay’s tour merchandise is made from organic and recycled materials.

It seems like they’ve got the bases covered. But is it enough?

Carbon Market Watch praises the band’s efforts but points out that some information is missing from their data — such as emissions from fan travel. They also suggest the numbers could be reduced by playing fewer concerts.

The data and sustainability claims have been audited and verified by the MIT Environmental Solutions Initiative.

“For some time now, Coldplay has been leading by example in taking seriously and acting on the various interrelated environmental and social challenges facing humanity; climate change, biodiversity loss, air and water pollution, environmental injustice and more,” says John E. Fernández, director of the MIT Environmental Solutions Initiative.

“With each subsequent year of their tour they demonstrate an evolving vision and expanded commitment to move the entire music industry toward true and humane sustainability and planetary resilience. From collecting unprecedented amounts of data to taking specific actions today based on rigorous analysis, Coldplay is modelling a trajectory toward a low-carbon, biodiverse and equitable future,” he adds.


After all, they’re one of only a few taking such measures.

Comprehensive industry-wide data is scarce. That’s why MIT is conducting its own research, led by Fernández and MIT research scientist Norhan Bayomi of The Climate Machine, an MIT Environmental Solutions Initiative research group.

“This latest analysis of Coldplay’s impact on the environment from touring is again setting a new standard for the entire music industry. The data and the methods of analysis support the conclusion that substantial progress has been made to reduce emissions in touring,” Fernández says.