We're at a critical juncture in the fight against climate change, and the focus is now on a powerful yet often overlooked greenhouse gas: methane. Can reducing methane emissions be our last-ditch effort to save the planet?
For two years, global temperatures have surpassed the 1.5°C limit set by the Paris Agreement, and the consequences could be catastrophic, as warned by UN Secretary-General António Guterres.
Scientists are particularly concerned about the potential for irreversible tipping points, such as the Amazon rainforest drying out or the melting of the Greenland ice sheet. These events could trigger a climate breakdown spiral, and the world must act swiftly to prevent this.
But here's where it gets controversial... While transitioning away from fossil fuels is crucial, it's a marathon-like process that we simply don't have time for. Some experts argue that the key to slowing down near-term warming lies in targeting methane emissions.
Durwood Zaelke, president of the Institute for Governance and Sustainable Development, emphasizes the urgency: "Cutting methane is our best shot at slowing down climate change in the short term. It's like having a rocket in our pocket—a powerful tool to buy us time."
Methane, a major component of natural gas, is produced naturally and through human activities like leaky oil and gas infrastructure, livestock farming, and organic waste decomposition. Despite its shorter lifespan compared to carbon dioxide, methane traps heat about 80 times more effectively.
Scientists estimate that methane has contributed significantly to recent warming, with new satellite data revealing that many countries have underreported their emissions. In fact, methane emissions have been rising, even as carbon dioxide output slows.
By cutting methane emissions, we can provide the planet with a much-needed breather. It buys us time to transition to clean energy while staving off the worst impacts of climate breakdown. Global temperature rises could be reduced by approximately 0.3°C in the next decade with a 40% methane cut, and by as much as 0.5°C by 2050 with further reductions.
Paul Bledsoe, a former climate adviser, puts it simply: "It's effective and cheap. Two-thirds of the needed energy sector reductions can be achieved at zero net cost."
A recent study published in Science highlights the potential benefits of methane reduction. It could delay key tipping points, reducing the likelihood of Amazon rainforest die-back by 8% and disruption to the Indian monsoon by 13%.
The study also found that the economic benefits of methane reduction are significant, with potential gains of $1 trillion annually for the global economy. Simon Dietz, a professor at the London School of Economics, states, "The economic case for action is clear. It's not only feasible but also economically compelling."
However, progress has been slow. Over 150 countries have pledged to reduce methane emissions by 30% by 2030, but major producers like China, India, and Russia are not on board. The US, under Trump, is also unlikely to fulfill its commitment.
Some countries are taking action. The EU, for example, introduced rules requiring European companies to reduce methane production and imposing strict monitoring and reporting standards for imports. This ensures that imported gas meets high standards, reducing routine venting and flaring.
Svitlana Romanko, executive director of Razom We Stand, explains, "By enforcing transparency, we expose the hidden climate costs of fossil gas and hold unaccountable suppliers like Russia accountable. This empowers consumers and policymakers to make ethical choices."
Countries have a range of options to reduce methane emissions, many of which are low-cost and even profitable. Capping shale gas wells and staunching leaks from oil and gas infrastructure can save money and reduce emissions. Ending wasteful venting and flaring practices is a simple win, as established technology makes it unnecessary.
Tommaso Franci of Amici della Terra emphasizes, "Reducing methane emissions in the energy sector is the most effective and rapid way to cut greenhouse gases in the short term."
While these are positive steps, the challenges are significant. The US, for instance, is a major international source of methane, particularly from shale gas fracking sites. With Trump in power, enforcing better practices is unlikely, as new rules formulated under Biden have been suspended.
Russia, another major source of methane from oil and gas installations, is also a concern. Bledsoe notes, "We know they're venting and flaring massively, but they provide no data."
Abandoned coal mines are another major contributor, with China's coal mines alone responsible for about 10% of global energy-related methane leaks. Sabina Assan, senior analyst at Ember, says, "We have the technologies to mitigate coalmine methane. Now, we need companies and governments to implement these solutions."
Zaelke advocates for a global methane agreement, similar to the Paris Agreement, to mandate cuts and best practices across the energy industry. Mia Mottley, the prime minister of Barbados, has also supported this idea.
While the chances of such an agreement at Cop30 are slim, many countries are open to discussions and recognize the need for faster action. Most countries with national climate plans, known as NDCs, include methane reduction measures.
While fixing leaky energy infrastructure is the quickest and cheapest way to reduce methane emissions, agriculture, waste, and livestock also contribute about 40% of human-made methane. A recent report found that the world's largest meat and dairy companies generate more greenhouse gas emissions than Saudi Arabia.
Yushu Xia, an assistant research professor, suggests ways to reduce methane from livestock and agriculture, such as improving water, fertilizer, and soil management in rice production and implementing better feeding and breeding practices for livestock. She adds, "Better management often provides additional ecosystem benefits."
However, dietary changes are also necessary, moving away from high red meat consumption, which is a health concern in developed countries. Kari Hamerschlag of Friends of the Earth emphasizes, "Governments must address the climate impact of industrial meat and dairy. Binding agricultural emissions targets and support for a just transition to plant-based food systems are essential."
The fight against climate change is complex, but reducing methane emissions offers a powerful tool to buy us time. It's a controversial yet promising strategy, and the world must act swiftly to make it work.
