The Global Reporting Initiative (GRI) is a UN-backed scheme that aims to promote a standardised approach to corporate reporting on sustainability issues.
Its sustainability reporting guidelines - the most recent version of which are known as the G3 guidelines - provide guidance on how businesses should present sustainability reports and what metrics they should use.
GRI claims that adherence to the guidelines allows firms and investors to compare like with like when assessing businessess' environmental performance.
Comparing last year's Outlook to the latest one reveals crucial shifts in BP's expectations of green technologies
Renewables by far the fastest-growing fuel source over next two decades, according to oil giant, although it expects fossil fuels to still play major role
Environment Secretary Michael Gove's speech on farming policy at the NFU Farming Conference 2018
Mad Max? David Davis' gaslighting on environmental fears is an insult to his audience, and our intelligence
David Davis is apparently 'irritated' that people fear the UK could water down environmental standards - has he really been paying so little attention?