Methane leaks have emerged as a top threat to the global climate, with the latest incident involving two Russian gas pipelines under the Baltic Sea that are at the heart of an energy crisis triggered by Russia's invasion of Ukraine.
Methane is the main component of natural gas. It can leak from pipelines and drill sites, and is also emitted from farming and food waste.
Research increasingly shows that reducing emissions of methane is vital to limiting planetary warming to 2 degrees Celsius or less above preindustrial times in order to avert the worst impacts of climate change.