Global temperatures have been exceeding the 1.5C heating limit set by the Paris climate agreement for two years, with devastating consequences looming if irreversible tipping points are triggered.
The biggest worry is that further warming could lead to catastrophic outcomes such as the widespread drying of the Amazon or the melting of the Greenland ice sheet. Minimizing and reversing this overshoot must be a priority, but shifting to burn less fossil fuel is taking too long.
Some scientists say cutting methane - the powerful greenhouse gas produced by natural and human-made processes - could be the key to slowing near-term warming. Methane has a shorter lifespan than carbon dioxide, but its impact on the atmosphere is 80 times greater. Experts estimate that methane alone has driven at least a third of recent warming.
The good news is that cutting methane can have significant benefits. A global methane reduction of 40% could hold global temperature rises down by 0.3C in the next decade and up to 0.5C by 2050. This would give the planet some much-needed breathing space while transitioning to a clean energy future.
However, taking action on methane is proving difficult due to lack of cooperation from major producers such as China, India, and Russia. The US has been missing its commitment under Biden, but there are moves in some countries like the EU to control methane emissions through stricter regulations.
Many countries have the measures they need to reduce methane emissions quickly and cheaply, including capping off shale gas wells and staunching leaks from oil and gas platforms. Even abandoned coalmines could be a major source of methane if addressed.
The lack of action is partly due to a lack of global agreement on methane reduction targets. While some countries have included measures in their nationally determined contributions, others are still missing out.
However, there are signs that more countries are becoming open to discussions on methane. Experts say binding national plans and enforcing compliance will be crucial if the planet is to slow warming in time.
The biggest worry is that further warming could lead to catastrophic outcomes such as the widespread drying of the Amazon or the melting of the Greenland ice sheet. Minimizing and reversing this overshoot must be a priority, but shifting to burn less fossil fuel is taking too long.
Some scientists say cutting methane - the powerful greenhouse gas produced by natural and human-made processes - could be the key to slowing near-term warming. Methane has a shorter lifespan than carbon dioxide, but its impact on the atmosphere is 80 times greater. Experts estimate that methane alone has driven at least a third of recent warming.
The good news is that cutting methane can have significant benefits. A global methane reduction of 40% could hold global temperature rises down by 0.3C in the next decade and up to 0.5C by 2050. This would give the planet some much-needed breathing space while transitioning to a clean energy future.
However, taking action on methane is proving difficult due to lack of cooperation from major producers such as China, India, and Russia. The US has been missing its commitment under Biden, but there are moves in some countries like the EU to control methane emissions through stricter regulations.
Many countries have the measures they need to reduce methane emissions quickly and cheaply, including capping off shale gas wells and staunching leaks from oil and gas platforms. Even abandoned coalmines could be a major source of methane if addressed.
The lack of action is partly due to a lack of global agreement on methane reduction targets. While some countries have included measures in their nationally determined contributions, others are still missing out.
However, there are signs that more countries are becoming open to discussions on methane. Experts say binding national plans and enforcing compliance will be crucial if the planet is to slow warming in time.