PAS 2050 is a specification for the assessment of the lifecycle greenhouse gas emissions of goods and servicesIt was introduced in 2008 (revised in 2011) with the aim of providing a consistent internationally applicable method for quantifying product carbon footprints.PAS 2050 is defined and certified by the British Standards Agency (BSI). This has been using some come consultancies and business to greenwash their business activity. So much so that offsets are getting a bad reputation, even if the original purpose was genuine.