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Have you ever smelled a landfill? Well, that smell is probably not the worst thing that it produces methane gases and you cannot see or smell it until it catches fire. And that's unfortunately what's been happening in many cities across the continent and Dakar, in Accra, in Kampala and Osaka, and recently at the Peter Maddowsburg landfill in South Africa. Now, just imagine being one of the thousands of kids affected by that fire. Every breath you take is kind of a tighter chest, a sharper headache. It's really unacceptable. And these landfills, they catch fire for many reasons. One of them is that we keep sending organic waste there that decays in the absence of oxygen, creating the conditions for methane to come up. There's many ways that we know how to solve this question of dangerous landfills. First of all, stop producing as much waste and sending it there. Sort and treat what's already there and radically improve the governance of those sites. Doing that homework has immediate benefits, particularly for populations living nearby. It improves air quality and it reduces the risk of fire. And it turns out that addressing methane out of these landfills plays a very important role in tackling the global question of climate change. I'm a social and economic development professional. I've spent the bulk of my career looking at how this continent transforms to meet the demands and the ambitions of its people at the intersection of democracy, security and economic opportunity. And it's kind of always been clear to me, right, to get to a certain degree of sustainable development, we need to embed climate in our plans. And I've joined the global Methane hub. And it's become abundantly clear that effective climate progress also requires methane action. And that is because methane is such a powerful greenhouse gas. It has Contributed up to 45% of the net warming that we're experiencing today. That's because it is 86 times more powerful at trapping heat than carbon dioxide is over 20 years. And all of you and myself, we know that we've got to do so many things simultaneously to address this question of both climate and development, right? And long term decarbonization is one of the primary goals. But methane offers us an additional opportunity. If we're able to come together and reduce methane emissions by 50% over the next 20 years, it allows us the opportunity to lower the rate of global warming by 0.3 degrees Celsius. That may not sound like much, but it is a lifeline. It is also one of the most effective ways that we know of to reduce short term climate induced vulnerability. And that is important all over the globe, obviously, but it is critically important for this continent that's disproportionately affected by the effects of climate change. We lose up to 5% of our yearly economic output to adverse climate events. The costs of adapting societies, our societies and our economies to changing climate are skyrocketing upwards of $50 billion. So this idea of addressing short term vulnerability is not a nice to have. It's an imperative as we build towards long term resilience. And look, 60% of these vulnerability inducing emissions come from sectors that have traditionally been associated with economic progress. Fossil fuel energy, waste management and sanitation, as well as agriculture, rice production and livestock. Some regions are emitting a lot more than others and need to do a lot more and a lot faster to address their own emissions. If we're going to meet our collective objectives. Africa has a lower footprint than many other regions, but that is changing. It's changing because we're growing populations, we're growing our economies. And so we've kind of got to embrace this duality where we absolutely need to usher in a new developmental model that rapidly lifts people out of poverty, creates opportunity and provides for more dignity. But to do so in a way that minimizes these emissions that are creating the vulnerability that plagues us today. And luckily it's happening in many ways on the continent. Let's think back to those burning landfills that we discussed. Well, in Durban, a different picture is coming up. Organizations have come together, civil society, government officials, research institutions, to ensure that no or less organic waste ends up in a landfill 35 km outside of the city, and therefore, hopefully limiting methane emissions. And to do so, they've partnered with two of the largest city fruit and vegetable markets. And rather than throwing away unused or unsold produce, they collect it and they transform it into an asset class, they compost it. Remarkably, over two years, they've been able to divert 277 tons of organic waste away from that landfill. They've created sustainable, safe, well paying jobs for the community. They have reduced the city's costs in landfilling and transportation. And that compost is going in to improve the quality of city parks that families like yours and mine can end up enjoying. These are real benefits that also end up reducing methane. And it is the power of community driven action, underpinned by a circular economy approach that is part and parcel of the systemic change that we need to see. And that needs to be supported by better policy, better financing and improved governance. But let's also talk about energy, fossil fuels, major contributor to global methane emissions. It is also one of the sectors where we kind of know how to abate at costs in the short term. But let's also be very clear, this continent will need more energy for better development. That's an existential question for us, and luckily for all of us, 80% of new generation capacity coming online in the next few years here will come from renewables. And if we're able to strategically pair that with adequate investments and adequate planning, it accelerates our ability to diversify our energy mix away from reliance on fossil fuels. And that is really important first and foremost for our own energy security. It is also critically important because it helps us abate emissions today as we transition in the long term. Because, mind you, the industry, oil and gas industry in particular, absolutely knows how to solve their emissions problem. Reduce flares, right? Detect and plug your leaks, improve measurement, do it all over again. And they have the money to do it. It's just not happening at the scale and the speed that we needed to happen. We just cannot rely on voluntary commitments. We absolutely need regulatory frameworks that compel core production, because otherwise, this is what we get. This is a gas. There it is the burning of methane gas associated with oil extraction. And it is as dangerous, as wasteful as it looks. It is associated with high levels of respiratory diseases and high fevers, particularly in children. And astonishingly, 2 million people in the Niger Delta in Nigeria live within a four kilometer radius of one of these things. And so what do we do? We regulate, we enforce and we track. And that's exactly what the government of Nigeria has been Trying to do. It has essentially passed progressive regulation to ensure that it is banning flaring. Enforcement is where the challenge is, obviously, but they're doing so because it makes sense from a public health perspective and it saves lives. But it also fundamentally makes economic sense. It creates a potential revenue stream for government from non compliant actors, but it also reduces energy waste in a country that is plagued with energy insecurity. Regulate, enforce and track. Let's talk about something else. Rice. Some of you are smiling. I know you love it. Many people love it. It's a major global food crop. In fact, it is consumed by billions of people from Tokyo to my hometown in Conakry in Guinea. And we will need to be producing more of it to meet food security demands. And rice production is actually both affected by climate change and partly contributes to it because it emits methane. Think about the millions of farmers who grow it. Typically what they do is they flood their field. By flooding the field, oxygen cannot get into the soil and it creates the conditions for methane to emerge. And so how do we solve this? How do we ensure that we're improving productivity and production to meet food security, but doing so in a way that minimizes emissions? Well, 11,000 farmers in Accra, in Ghana or around Accra are working very closely with their Environmental Protection Agency and they're attempting to use a method called alternate wetting and drying. This is a method that only when conditions are suitable and applicable, allows them to naturally drain the water off their field. In doing so, they are managing an incredibly scarce resource, that is water. But they're also managing production and productivity and limiting methane emissions. That is good for the producers, it's good for consumers, it's good for food security because ultimately we will need more resilient and sustainable production systems that also reward small holder farmers. And we can't stop there. We absolutely need to continue to have multidisciplinary spaces in which we provide more solutions, more cost effective solutions, less risky solutions to these farmers who are central to the systemic change that we want to see in food systems. And listen, what I've described here is a series of projects and initiatives that essentially show a window into the nexus between climate change, development and methane. And it's certainly not a panacea. And they need scale and they need improvement. What they do show is progress that builds momentum that people can get behind because they can see the benefits. And we will undoubtedly need that momentum, partly because to get to a high development and low methane future, we will need systemic improvements. And that's also why some of the things that African nations have been working towards requires a lot more support, particularly in ensuring that we're able to raise domestic resources and capital that allows us to self fund climate and development in a way that increases agency and decision making here on the continent. Things like bringing together African financial institutions around the Africa Club, or addressing the incredibly high cost of capital that we face or sovereign debt burdens. Unlocking that capital is integral to moving methane action forward because unfortunately, right, a lot of these meth emissions are going up globally and much of it is also underreported. And so there's really no getting around or away from the centrality of governance and accountability of which we will need more of, first of all at home, because we need to manage our affairs better, but also globally to ensure that we're understanding where these emissions are coming from and how we tackle them equitably for greater collective impact. It's also the case that in this distributed multipolar world I mentioned that we'll probably need more rather than less collaboration, particularly leaning into domestic capacity in a much more creatively and distributed way across geographies and across disciplines to support better scientific research and breakthroughs, to improve data measurement capacity across the globe and to get to more effective financing options. And I have no doubt that this continent will rise to the challenge. First of all because it is in our own self interest to move away from vulnerability and into resilience, but also because it is a necessary thing to do. And I've spoken a little bit about the co benefits of methane and you'll hear a lot of that. But perhaps it's fitting to flip the script a little bit. Maybe when we build systems and societies that reward safer, cleaner and livable cities, more resilient, more nutritious food systems, more diversified and productive energy systems. Low methane is itself a co benefit of that better developmental pathway that is good for planet, but it is also fundamentally good for people. Hopefully that's something that you all can also get behind. Thank you.
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That was Mohammed A. Sultan at the TED Countdown Summit in Nairobi, Kenya in 2025. If you're curious about Ted's curation, find out more@ted.com curation guidelines and that's it for today. TED Talks Daily is part of the TED Audio Collective. This talk was fact checked by the TED research team and produced and edited by our team, Martha Estefanos, Oliver Friedman, Brian Greene, Lucy Little and Tansika Songmanivong. This episode was mixed by Christopher Faizy Bogan, additional support from Emma Tobner and Daniela Balarazo I'm Elise Hu. I'll be back tomorrow with a fresh idea for Feed. Thanks for listening.
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Speaker: Mohamed A. Sultan
Date: October 22, 2025
Host: Elise Hu
Event: TED Countdown Summit, Nairobi, Kenya
In this incisive TED Talk, Mohamed A. Sultan—a sustainability strategist and social and economic development professional—lays out the urgent, overlooked challenge of methane emissions in the fight against global warming, specifically through the lens of African development. Rather than focusing solely on carbon dioxide, Sultan urges a dual approach: tackling methane for immediate climate relief while building long-term, sustainable systems for health, development, and economic opportunity. He shares powerful stories of community-driven solutions across Africa, emphasizing the necessity of regulation, innovation, and international cooperation to “pull the emergency brake” on global warming.
[03:47 – 05:24]
Beyond the familiar smell of landfill sites, the true threat is methane—a potent, odorless greenhouse gas that builds up invisibly until fires break out.
Recent catastrophic landfill fires in cities like Dakar, Accra, Kampala, Osaka, and Pietermaritzburg have directly affected thousands, particularly children, causing respiratory issues and headaches.
Quote:
“That smell is probably not the worst thing that it produces. Methane gases—you cannot see or smell it until it catches fire.”
—Mohamed A. Sultan [03:50]
Fires are fueled partly due to organic waste in landfill, which decomposes anaerobically (without oxygen), ideal for methane production.
[05:25 – 07:16]
Multiple interventions are available:
These solutions yield immediate, tangible benefits: better air quality and reduced fire risk for communities living nearby.
Methane action is critical to combating global climate change as it is a far more potent greenhouse gas than CO₂, responsible for up to 45% of net warming.
Quote:
“Methane is 86 times more powerful at trapping heat than carbon dioxide is over 20 years.”
—Mohamed A. Sultan [06:32]
[07:17 – 09:10]
Africa, while contributing less to global emissions historically, is facing increased methane output due to rapid population and economic growth.
The continent’s vulnerability is highlighted by economic losses (up to 5% of annual GDP from climate impacts) and staggering adaptation costs ($50 billion+).
Addressing methane is not optional for African nations; it’s required for survival and prosperity.
Quote:
“To get to a certain degree of sustainable development, we need to embed climate in our plans.”
—Mohamed A. Sultan [05:45]
[09:11 – 10:12]
Example from Durban, South Africa: partnership between organizations and fruit/vegetable markets to collect unsold produce, compost it, reduce organic landfill input, and thus methane emissions.
Over two years, 277 tons of organic waste diverted, jobs created, municipal costs lowered, and city parks improved.
Quote:
“They collect it and they transform it into an asset class, they compost it... And that compost is going in to improve the quality of city parks.”
—Mohamed A. Sultan [09:45]
Community-driven, circular economy approaches are essential but require strong policy, financing, and governance support.
[10:13 – 11:36]
Fossil fuel extraction is a major methane source, particularly from flaring (burning off excess gas).
Example: In the Niger Delta, 2 million people live near flaring sites—this leads to high rates of respiratory disease and wasted energy.
While the oil and gas industry knows how to prevent methane leaks and flaring, voluntary compliance isn't enough; regulation and enforcement are essential.
Nigeria is cited for progressive anti-flaring regulation, though enforcement remains challenging.
Quote:
“We just cannot rely on voluntary commitments. We absolutely need regulatory frameworks that compel core production, because otherwise, this is what we get.”
—Mohamed A. Sultan [10:55]
[11:37 – 13:01]
Rice farming is both globally necessary for food security and a significant methane source due to the practice of field flooding.
Example: Around Accra, Ghana, 11,000 rice farmers collaborate with environmental agencies to implement “alternate wetting and drying” — intermittent field draining, saving water and reducing methane.
These innovations support farmers’ productivity, conserve resources, and mitigate emissions.
Quote:
“We will need more resilient and sustainable production systems that also reward smallholder farmers.”
—Mohamed A. Sultan [12:52]
[13:02 – 14:03]
Projects highlighted are just the start—they signal progress and momentum, but scaling them requires not just innovation but financial self-determination.
Importance of unlocking African capital (via institutions like the Africa Club), lowering financing costs, and managing debt to self-fund climate and development efforts.
Quote:
“Unlocking that capital is integral to moving methane action forward...”
—Mohamed A. Sultan [13:51]
[14:04 – 15:02]
Global methane emissions remain underreported; governance and accountability at all levels are crucial.
The multipolar world needs greater, not less, collaboration—across disciplines and geographies—to spread innovations, improve data, and ensure effective financing.
Sultan ends on an optimistic note of African agency and commitment, reinforcing that building better systems for health, food, and energy will naturally yield low-methane, resilient societies.
Memorable Closing Quote:
“Maybe when we build systems and societies that reward safer, cleaner and livable cities, more resilient, more nutritious food systems, more diversified and productive energy systems—low methane is itself a co-benefit of that better developmental pathway that is good for planet, but it is also fundamentally good for people.”
—Mohamed A. Sultan [15:12]
Mohamed A. Sultan’s talk reframes methane reduction not as a peripheral technical fix but as an urgent, people-centered lever for global climate stability and equitable development. By spotlighting African leadership, community innovation, and the need for finance and governance reform, he offers hope and practical direction—a global call to “pull the emergency brake” before it’s too late.
For further reading and curation guidelines: ted.com/curation-guidelines