Leaks In The City: Methane’s Invisible Menace
In the US, gas utilities are legally required to stop leaks that endanger people (for instance, when gas leaks in a building are in concentrations high enough to ignite and explode), yet they face much less stringent regulation when it comes to addressing gas leaks that don’t pose an immediate safety hazard, such as a small leak from an outdoor meter. But it’s a problem worth addressing because “nonhazardous” gas leaks are quietly increasing greenhouse gas levels in the atmosphere, and their ultimate impact has yet to come.