Waste pickers sort through discarded materials at a landfill. Food waste buried in landfills can release methane as it decomposes in oxygen-deprived conditions.Image Credit:UNDP
Every day, more than one billion meals go uneaten around the world. What appears to be a problem of excess food, poor planning or household waste is also becoming a climate problem, as discarded food can generate methane when it decomposes in landfills.
Global food waste reached an estimated 1.05 billion tonnes in 2022, accounting for nearly one-fifth of all food available to consumers at the retail, food service and household levels, according to the United Nations Environment Programme (UNEP) Food Waste Index Report 2024.
Households accounted for about 60 per cent of this waste, highlighting how everyday food consumption is closely connected to the global climate challenge.
How wasted food becomes a climate problem
Food waste becomes particularly problematic when it is sent to landfills. Buried beneath layers of other waste, organic matter decomposes in oxygen-poor conditions. Microorganisms then break it down and release methane.
Methane is a far more powerful heat-trapping gas than carbon dioxide over shorter periods. The UN estimates that methane traps about 86 times more heat than carbon dioxide over a 20-year period.
Landfills are therefore an important source of human-caused methane emissions. In the United States, municipal solid waste landfills are the third-largest source of human-related methane emissions.
The scale of food waste also means that the climate impact begins long before food reaches a landfill. Food that is never eaten still requires land, water, energy and other resources to produce, process, transport and store.
The Food and Agriculture Organization (FAO) estimates that around 1.4 billion hectares of agricultural land ,roughly 28 per cent of the world’s agricultural land is used to produce food that is ultimately lost or wasted.
Food waste can also contribute indirectly to deforestation because agricultural expansion remains a major driver of forest loss. Wasting food therefore means wasting the land and natural resources used to produce it.
Cutting waste could deliver faster climate benefits
The climate implications are significant, but methane’s relatively short atmospheric lifetime also presents an opportunity.
Unlike carbon dioxide, which can remain in the atmosphere for centuries, methane breaks down much faster. Cutting methane emissions can therefore produce climate benefits within decades.
“At a time when the world is searching for practical ways to slow warming quickly, tackling food waste may be one of the most immediate and cost-effective climate solutions available,” said Martin Krause, Director of the Climate Change Division at UNEP.
The Food Waste Breakthrough initiative aims to halve food waste by 2030 and could reduce methane emissions by up to 7 per cent.
Food waste represents a major environmental threat .Image credit: Unsplash/Simon Peel
Several countries are already attempting to reduce waste before it reaches landfills. Brazil has introduced national plans focused on reducing food and organic waste, while UNEP is working with authorities, schools, communities and food businesses in Rio de Janeiro to reduce food waste.
In Kenya, a UNEP-supported initiative is recovering surplus food from across the agricultural value chain and redirecting it to early childhood education centres in underserved communities.
What happens to unavoidable food scraps?
Preventing food waste is the most effective way to avoid methane emissions. But food scraps that cannot be prevented can also be managed differently.
When organic waste is separated from other rubbish and composted in oxygen-rich conditions, it does not produce methane in the same way as food buried in an anaerobic landfill environment.
This approach is being promoted in several African countries, where organic material makes up more than half of municipal solid waste. Eleven governments, with support from the UNEP-convened Climate and Clean Air Coalition, have committed to incorporating waste pickers into formal waste-management systems and training them to sort and compost organic waste.
Another emerging approach uses black soldier flies. Their larvae consume organic waste, allowing food scraps to be converted into useful biomass. The approach is already being used in waste-management systems in countries including Uganda and Malawi.
A climate solution hiding in the bin
Global efforts to tackle food waste have gained momentum, but progress remains insufficient. The world is still far from meeting the Sustainable Development Goal of halving per-capita food waste by 2030.
More than 60 countries have also pledged, through the Declaration on Reducing Methane from Organic Waste, to cut waste-sector methane emissions by 30 to 35 per cent below 2020 levels by 2030.
For consumers, the climate connection can begin with something as simple as buying only what is needed, storing food properly and using leftovers.
“Every meal rescued, shared or never wasted is food put to better use. It is also methane avoided,” Krause said.
The message is straightforward: reducing food waste is not only about saving food. It is also about reducing the methane released when that food becomes rubbish and slowing warming in the process.
EP Staff is the editorial team at EdPublica, an independent media organisation focused on science, education, environment and public policy. The team produces evidence-based news, features, explainers and analysis on issues that shape society and everyday life.
Hunter Valley Coal Mine Gets Approval to Run to 2045. What Does It Mean for Australia’s Climate Transition?
Australia’s Hunter Valley coal mine has been approved to operate until 2045, raising questions about how the extension fits into the country’s transition towards lower emissions and its net-zero target.
Heavy machinery and conveyor belts operate at an open-pit coal mine. Representational image. Image credit: Pexels
Australia’s transition away from fossil fuels faces a new test after New South Wales approved the continuation of the Hunter Valley Operations (HVO) coal mine until 2045.
The NSW Independent Planning Commission (IPC) on September 30 approved the continuation of HVO North until the end of 2045 and HVO South until the end of 2042. The project would allow an estimated 429 million tonnes of coal to be extracted from the Hunter Valley near Singleton.
The decision is significant not only because of the scale of the mine, but because it extends a major coal operation into the period in which Australia is committed to sharply reducing its greenhouse-gas emissions.
Australia’s current climate commitments include cutting national emissions by 43 per cent from 2005 levels by 2030 and by 62–70 per cent by 2035, with net-zero emissions targeted for 2050.
The latest government inventory estimates Australia’s emissions at 452.4 million tonnes of carbon dioxide equivalent in the year to June 2026, a preliminary 1.8 per cent decline from the previous year. Emissions in the year to March 2026 were 25 per cent below 2005 levels.
Against that backdrop, the IPC acknowledged that the HVO project would have a substantial climate footprint. Its statement of reasons estimates that the project could result in about 809 million tonnes of greenhouse-gas emissions from local mining operations and the eventual combustion of exported coal overseas. The commission said those emissions would contribute to climate impacts in the Hunter, NSW and globally.
The 809-million-tonne figure needs an important qualification to note. it is a lifecycle-related estimate that includes overseas combustion emissions and should not be interpreted as emissions produced directly by the mine.
The economic case for the extension is substantial. HVO employs more than 1,500 people and engages more than 800 suppliers, according to evidence presented to the IPC. The NSW Government says the continuation could secure up to 1,500 ongoing jobs and create about 600 temporary positions through infrastructure upgrades, subject to federal approval.
The approval also comes with conditions intended to address the mine’s emissions and its eventual transition. HVO must prepare a Scope 3 Management Plan dealing with emissions associated with exported coal, maximise renewable electricity use at the mine and purchase additional carbon offsets. It must also prepare a comprehensive closure plan within 12 months, in consultation with local councils and communities, outlining how the mine will transition towards closure while supporting workers and the local economy.
The NSW Government argues that the decision can support regional employment while maintaining the state’s broader emissions-reduction pathway. It says the approved proposal has 43 per cent lower Scope 1 emissions than the company’s 2022 application. NSW’s 2026–50 coal policy also allows extensions of existing mines while ruling out applications for new greenfield coal mines.
At the national level, the federal Safeguard Mechanism is intended to reduce emissions from Australia’s largest industrial facilities. The government says the mechanism is designed to put covered facilities on a trajectory consistent with the country’s 2030 target and net-zero goal.
That creates the central question around HVO’s extension. How does Australia manages the economic and employment role of existing coal regions while reducing emissions over the same period.
The NSW approval does not settle that question. The project still requires approval from the Australian Government under the Environment Protection and Biodiversity Conservation Act.
For the Hunter Valley, the decision provides a longer operating horizon for an established coal industry. For Australia’s climate transition, it brings the challenge of managing an economy in which existing fossil-fuel assets continue operating while national policy seeks progressively sustainable energy and lower emissions.
Nearly three months after the Halma, Kesarpura's pond is brimming with water despite scanty rainfall. Photo: Mukesh Porwal, Block Facilitator, VAAGDHARA
About 22 kilometres from the Petlawad block headquarters in Jhabua district of Madhya Pradesh, the village of Kesarpura has a story to tell, one about the confidence of an entire community. A Halma was held here on 19 May 2026, and what followed convinced the village that the solution it had long sought from outside had been within it all along.
Halma is a word from the Bhili dialect, often translated as a “call for help”, and it means collective voluntary labour. When a family in the Bhil community is weighed down by a burden, whether raising a house, bringing in a harvest or facing a calamity, the word goes round the village and people come, unpaid and with their own tools, to stand by them. The message is simple: you are not alone. In Jhabua the tradition has also been turned to the work of saving water. Since 2009 the local organisation Shivganga has organised large Halmas for soil and water conservation, and one in February 2020 drew some 20,000 people from about 500 villages.
Kesarpura’s only pond had been waiting for exactly this tradition. Years of neglect had left it so choked with silt and weeds that its depth was shrinking, and so was its capacity to hold water. Seepage through one stretch of the embankment quietly drained away the rainwater it collected. This is a tribal district, where Scheduled Tribes made up about 87 per cent of the population at the 2011 Census, and a hilly one: as the district administration itself notes, water runs off the slopes instead of being held by the soil, so even good rainfall can leave villages short of water. In such a landscape a failing pond meant a direct threat to a full year of farming and to the water that livestock depend on. As summer set in, the pond bed would fill with cracks, and the village’s hopes would drain away with it.
Before the Halma: a dry pond bed, heaps of silt and seepage along the embankment.Photo: Mukesh Porwal, Block Facilitator, VAAGDHARA
The village knew the problem was big, but it also knew the solution lay in its own hands. With the support of the Gram Swaraj Samuh, a village self-governance group of ten women and ten men formed by VAAGDHARA, it was decided that a Halma would be held at the pond. The idea was not new to the area: less than a fortnight earlier, on 6 May, villagers of Borpada, also in Petlawad, had used a Halma to clear a silted public well after repeated appeals to the panchayat brought no result. On the morning of 19 May, Kesarpura showed its true strength.
It began not with speeches or formal announcements but with the beat of the dhol, kundi and thali. A rally wound through the village. Children ran ahead carrying a banner that read “Traditional Halma Method,” with the slogan beneath it: “Save water regularly, and the future is secure.” Behind them walked elders, youth and women, with someone from every household carrying a pickaxe, a spade or a metal pan.
The rally sets out to the beat of the dhol and thali, with a banner reading “Traditional Halma Method”; enthusiastic children lead the way.Photo: Mukesh Porwal, Block Facilitator, VAAGDHARA
Around 150 people gathered at the pond for the Halma. There is no attendance register and no list; people come of their own accord and leave having done more than they thought they could. Under the blazing sun, heads were covered with gamchas and dupattas, yet faces glowed instead of showing fatigue. The work divided itself. Some waded into the pond to cut the weeds, others dug out silt with pickaxes and spades, and the silt was loaded into pans and basins and handed to a long line of women. The pans passed from hand to hand and head to head, and the silt made its way out of the pond.
Men wielding pickaxes and spades on the pond bed, while women stand in line holding pans.Photo: Mukesh Porwal, Block Facilitator, VAAGDHARA
Women with faces covered and pans on their heads, carrying silt without a thought for the sun. Photo: Mukesh Porwal, Block Facilitator, VAAGDHARA
The role of women was the most remarkable part of the scene. Amid their household responsibilities, they stayed at the pond all day. Recalling that day, Basanti Ninama says that when the dhol sounded she could not sit at home, and standing in line with a pan on her head, it felt like work in her own courtyard.
“I was tired, but my heart felt light. I felt I was doing something for my village.”
– Basanti Ninama
Everyone also worked together to pile soil on the embankment where water had been seeping out, pressing it down and strengthening it. Clearing silt and weeds and strengthening the earthen bund are the standard steps in restoring a village pond, and those who know water conservation understand that the strength of the embankment and the depth of the pond decide how long a water body lasts. When noon came, the tools were set down, but the bond of togetherness did not break. Lunch, too, was cooked by everyone together on the pond’s bank. The women wove plates from tree leaves, and then everyone sat in a long row on colourful mats. An elderly woman and a small child ate the same meal on the same mat, and the true meaning of Halma came alive right there. Here, trust takes the place of accounts, and hard work and celebration blend into one another.
Women making leaf plates: even the preparation of the meal was a collective effort.Photo: Mukesh Porwal, Block Facilitator, VAAGDHARA
The simplicity of the leaf plate is a lesson in itself. A plate made from tree leaves leaves no plastic waste and needs no water for washing. Leaf plates have long been part of community feasts across India, and researchers describe them as a renewable alternative to plastic disposables. At an event whose very purpose is to save water, this goes beyond symbolism and becomes practice. Traditions often carry such eco-friendly solutions quietly, without any announcement.
Those who restored the pond that day included Basanti Ninama, Ganga Ninama, Surta Ninama, Sundar Mavi, Anadu Maida, Devli Mori, Phula Katara, Seema Maida, Anita Katara, Kala Ninama, Sukhram Maida, Ukarlal Maida, Mansingh Ninama, Ukar Ninama, Laxman Ninama, Dilip Vasuniya, Gendu Mori, Khima Mori, Anil Maida and Sunil Katara. Though they differ in age and family, their experiences seem threaded on a single string. For Ganga Ninama it was an emotional day: generations of her family have drunk this pond’s water, and it pained her to see it buried under silt.
“The day the pond was cleaned, I felt we had repaid our debt.”– Ganga Ninama
For men like Sukhram Maida and Anil Maida, the experience changed the way they thought. They used to believe that work on the pond was the government’s job, but on the day of the Halma they realised that when a village comes together, it has no one to wait for. “Before the Halma, we thought the government would do this work. This time we understood that when the village becomes one, we don’t have to wait for anyone.”– Anil Maida. The thought was not unique to Kesarpura: at the Samuh meeting in Borpada, someone had remarked that waiting for the government could cost another three years.
“It was very hot, but nobody complained. We want our children to see how work for the village is done.”– Devli Mori
During the event, Paramesh Patidar, Implementation Leader at VAAGDHARA, spoke with the villagers and explained that Halma is not merely voluntary labour but a tradition of standing by one another in joy and sorrow and sharing collective responsibility.
Behind the scenes, Block Facilitator Mukesh Porwal and his team also played a vital role, working at every level from mobilising people to planning the work. The steady guidance of Team Leader Dharmendrasingh Chunawat gave direction to the entire effort.
After the Halma the village returned to its routine, but nobody expected the result to show so soon. The monsoon turned out weaker than hoped. The India Meteorological Department had forecast a below-normal season, and by late July Jhabua was among the Madhya Pradesh districts reporting rainfall 33 to 45 per cent below normal; by 9 September the district’s shortfall stood at about 36 per cent. There was every fear that the pond would once again be left only partly filled. But about three months later, around August 2026, when villagers looked towards the pond, it was filled to the brim with water.
Where dust once flew, calm water now stretches far into the distance; the green grass sprouting along the edge is proof of life’s return.Photo: Mukesh Porwal, Block Facilitator, VAAGDHARA
The greatest joy was that the seepage through the embankment had also stopped. The water that came had stayed. For farmers like Sunil Katara and Mansingh Ninama, the meaning was direct: their fields will get irrigation and their cattle will have drinking water.
It is worth asking why such ponds last. Studies of India’s water infrastructure describe a recurring cycle of construction, neglect and rebuilding, with upkeep after construction as the weak link, and village ponds that were once maintained by the communities who used them fell into disrepair as that responsibility moved elsewhere. Experience shows that when a water structure is built from outside by a contractor, its upkeep often becomes nobody’s responsibility; the embankment breaks, the silt returns, and within a few years the pond can be back to its old state. A structure built through voluntary labour creates an emotional bond. Someone who has put soil into it with their own hands cannot bear to see it deteriorate. This is Halma’s greatest invisible achievement: along with the structure, it raises a whole generation of guardians. One good season in a poor monsoon is encouraging, but it is early evidence rather than proof; how long the pond lasts will depend on the desilting and embankment care the village now commits to.
The hopes ahead are considerable. In the rabi season, when fields need water the most, this stored water can become the farmers’ mainstay. With water standing in the pond, groundwater levels in nearby wells and hand pumps may also improve; case studies of desilted village ponds in Maharashtra’s Marathwada region report that nearby borewells recharged and the irrigated area grew in both the kharif and rabi seasons. Greenery is returning to the embankment, and guarding it is now the village’s shared responsibility. Remove the silt, bind the embankment, hold the rain, raise the groundwater, then irrigate the fields: this entire cycle of water conservation now appears to be complete in Kesarpura.
Greenery on the strengthened embankment, with still water on one side.Photo: Mukesh Porwal, Block Facilitator, VAAGDHARA
One sees the tradition of the elders and the labour of the young, the support of women and families, and above all a collective resolve to do something for one’s own village.
Kesarpura’s story is a reminder that development does not always wait for help from outside. In a country where, by NITI Aayog’s 2018 assessment, some 600 million people face high to extreme water stress, and where even large investments in water structures struggle with upkeep once they are built, examples like this show that the key often lies in local knowledge and community ownership. Three things together have given this pond a new lease of life: tradition meeting present-day need, institutions staying in the role of facilitators (in Borpada, too, the Samuh gave villagers room to decide for themselves rather than handing them ready-made answers), and a village that regards its resource as its own. Halma did not remove only silt and weeds from Kesarpura’s pond; it rekindled hope in people’s hearts, and today that hope is as clear as the pond’s water.
100% Access in China, 5% in South Sudan: The Global Electricity Gap
China has 100% electricity access, while South Sudan has just 5.4%. India and Nigeria show how access, consumption and demand reveal a deeper global electricity gap.
Two illuminated light bulbs represent the stark differences in electricity access and consumption across countries. Representational image. Image credit: Rejcl/Pexels
China and South Sudan are separated by more than 10,000 kilometres. They are also at opposite ends of the world’s electricity-access divide. In 2023, electricity access reached 100% of China’s population, compared with just 5.4% in South Sudan. India was at 99.5%, while Nigeria stood at 61.2%, according to World Bank data. This electricity gap sits along with global access rate was 91.6%.
But access tells only part of the story. The International Energy Agency estimates that people in sub-Saharan Africa consume about 200 kilowatt-hours (kWh) of electricity per person each year, compared with around 7,000 kWh in advanced economies and China. Meanwhile, about 730 million people still lacked electricity access in 2025, more than 80% of them in sub-Saharan Africa.
At the other end of the spectrum, global electricity demand is rising rapidly. It grew by about 3% in 2025, more than twice as fast as total energy demand. China alone accounted for 58% of the increase, with its net electricity demand exceeding 9,500 TWh.
This is the contradiction at the heart of the world’s “Age of Electricity”: while some economies are preparing to run more of their cars, factories and buildings on electricity, hundreds of millions of people are still waiting for reliable access to basic services.
The Electricity Gap: One Transition
For countries with near-universal access, the next phase is largely about increasing electricity’s role in transport, buildings and industry. For countries with major access gaps, the priority remains connecting households and businesses and making that electricity reliable and affordable. The IEA’s figures show why these stages cannot be treated as a single global transition. Electricity can be a basic service in one economy and the backbone of an industrial and digital economy in another.
Sector-wise energy consumption and electrification rates across regions in 2025. India’s electrification remains lower than the global average, particularly across buildings and industry. Source: IEA
South Sudan: Access is Still the Challenge
South Sudan’s 5.4% electricity-access rate means roughly 95% of its population remained without access in 2023. The World Bank has identified it as having the world’s lowest national access rate. The problem is not simply a shortage of generating technology. Building electricity infrastructure in countries with weak grids, dispersed populations and difficult financing conditions is expensive. Off-grid and mini-grid systems are particularly important where conventional grid expansion cannot reach everyone quickly.
The IEA estimates that universal electricity access could be achieved around 2035 under an accelerated-access scenario. That would require about 80 million people gaining access every year, including around 70 million annually in sub-Saharan Africa.
The proposed mix is also revealing: about 45% of new connections through grids, 30% through mini-grids and 25% through solar home systems. The IEA estimates that this would require about $23 billion a year in investment.
Connecting everyone would add only about 160 TWh of electricity demand by 2035—around 0.6% of today’s global electricity demand. Sub-Saharan Africa would account for about 90 TWh of that increase. The constraint, therefore, is less about the world’s overall electricity supply than about investment, infrastructure, institutions and the ability to extend electricity to productive economic activity.
Nigeria: Not Simple Yes-or-No Question
Nigeria shows the next stage. About 61.2% of its population had electricity access in 2023. That leaves a large share of the population without electricity despite the country’s much larger electricity system and economy.
Extending access is only part of the challenge. Electricity becomes economically significant when it can reliably run irrigation pumps, refrigeration, machinery, communications and health services. The IEA describes these as productive uses that can increase incomes and help households afford electricity.
An electricity-access percentage can therefore hide an important part of the story. Being connected is not the same as having enough reliable electricity to participate fully in a modern economy.
India: Rapidly Changing Demand
India has largely crossed the first access barrier. World Bank data put electricity access at 99.5% in 2023, compared with 61.2% in Nigeria and 5.4% in South Sudan. Its challenge is increasingly about scale, timing and the source of electricity.
India’s electricity demand grew rapidly for much of the past decade. But 2025 was an exception: demand rose only 1.4%, after four consecutive years of growth above 6%. The IEA attributes much of the slowdown to an early, intense monsoon that reduced cooling demand and electricity use for agricultural pumping.
The IEA expects India’s electricity demand to grow by an average 6.4% a year between 2025 and 2030, adding more than 570 TWh to annual consumption. Cooling alone is expected to account for more than one-fifth of that growth.
This creates a different set of infrastructure pressures. Solar generation peaks during daylight, while demand increasingly extends into the evening. Storage, flexible demand, electricity pricing and stronger grids become important. The IEA also identifies industrial electrification as an opportunity: nearly 30% of India’s industrial heat demand is below 150°C, where electric technologies can potentially replace fossil-fuel use.
China’s Electricity is Already the Backbone
China represents another stage. Electricity access is universal, but electricity demand is enormous. China’s net electricity demand exceeded 9,500 TWh in 2025, rising 5.1% from the previous year. China alone contributed 58% of global electricity-demand growth.
Industry remains a major driver, while electric vehicles, air conditioning and appliances are adding demand in buildings and transport. At the same time, China’s generation mix is changing. In 2025, renewables accounted for 34% of global electricity generation, while coal remained the largest source at 34%. In China, coal’s share of generation fell to 55% in 2025 from 70% a decade earlier, as renewable and nuclear generation expanded.
The challenge is therefore supplying one of the world’s largest electricity systems while reducing its dependence on fossil-fuel generation.
The gap Measured in Consumption
The difference between countries becomes even clearer when electricity use per person is considered. In Sub-Saharan Africa region, 200 kWh is the electricity use per person a year. Advanced economies and China average around 7,000 kWh. That roughly 35-fold difference reflects income, industry, appliance ownership, cooling, transport, infrastructure and the availability of electricity for productive activity.
It also explains why access rates alone are insufficient. The first electricity connection can provide lighting, refrigeration or healthcare. In a high-consuming economy, additional electricity may support electric vehicles, cooling, industrial production or data centres.
Electricity is therefore both an energy issue and a development issue, but the priorities differ sharply across countries.
One Global Target, Different Starting Points
The IEA’s High Electrification Scenario envisages electricity rising from about 23% of global final energy consumption today to 35% by 2035. Reaching that level would require major additions of clean generation, grids, storage and demand flexibility.
But the global picture cannot be reduced to that target. South Sudan is still working towards basic access. Nigeria faces a large access gap alongside questions of reliability and productive use. India is managing rapidly growing demand and a changing generation profile. China is managing one of the world’s largest electricity systems while reducing the role of fossil fuels.
The world is therefore not moving from a common starting line. The electricity gap is measured not only in access rates, but also in 5.4% versus 100% access, 200 versus 7,000 kWh per person, and the very different economic activities that electricity enables. The Age of Electricity may be global. Its starting points are not possibly deepening the inequality.