First published at New Scientist, 30 March 2012.
Coverage of the gas leak at Total's Elgin platform in the North Sea, off the UK coast, has so far focused on the potential for an explosion, and damage to sea life from hydrogen sulphide contamination - the latter now discounted. But methane is a powerful greenhouse gas, so what about the global warming impact? Here's what emerged from the back of my envelope. (more…)...