From Frank Aquino, Perth, Western Australia
Regarding an unexpected spike in methane emissions, I wanted to add another possibility: small but continuous leaks from domestic gas pipes (22 May, p 16). This could be due to deteriorating seals or pipes in the vast buried network of pipes, maybe due to a network’s age.
It is possible that small leaks all over a city, all over a country, all over the world, every minute of every day could be a significant contributor.
