Chatham House, known formally as Royal Institute of International Affairs, is an independent policy institute in London. It delivers rigorous research, analysis and dialogue on global issues—such as international relations, climate change, security and economics. Its mission: help governments and societies build a sustainably secure, prosperous and just world.

The Copernicus Interactive Climate Atlas (C3S Atlas) is a web‑based tool from the Copernicus Climate Change Service offering flexible exploration of past, present and future climate data. It integrates observational, reanalysis and projection datasets, and allows users to customise regional analyses and visualise key climate variables via maps, charts and time series.

This report examines how entrenched political and market structures hinder agribusinesses from transitioning to sustainable models. It identifies three systemic “lock-ins” and outlines how policy reforms, financial incentives, and political commitment can unlock agribusiness potential to drive food system transformation at scale and pace.

The GHG Protocol’s calculation tools and guidance details Excel‑based, cross‑sector, sector‑specific, and country‑specific tools, including those for cities and countries. Each tool includes step‑by‑step guidance and emission factors to support accurate GHG inventory development in line with the Protocol’s standards

This guide interprets the Greenhouse Gas Protocol Corporate Standard for U.S. public sector organisations. It provides standardised methods for accounting and reporting greenhouse gas emissions, supports inventory quality, and addresses public sector-specific scenarios such as leased assets, joint operations, and regulatory compliance.

This report outlines a neutral framework for estimating and reporting the greenhouse gas impacts of products, both positive and negative. It advocates the use of consequential methods for decision-making, highlights methodological challenges in attributional approaches, and recommends transparency and completeness in emissions assessments and corporate reporting.

This report outlines standards and procedures for quantifying and reporting greenhouse gas (GHG) reductions from mitigation projects. It provides a framework to estimate baseline emissions, assess additionality, and apply consistent accounting principles. The guide supports transparency, credibility, and harmonisation across project-based GHG initiatives.

This working paper presents a methodology for fossil fuel companies to estimate and disclose potential greenhouse gas emissions from their reserves. It outlines seven steps for calculating emissions, addressing combustion, leakage, and storage factors, with the aim of improving transparency and enabling comparison across companies and alignment with climate targets.

The GHG protocol agricultural guidance provides a framework for agricultural companies to develop greenhouse gas (GHG) inventories aligned with the Corporate Standard. It offers sector-specific methodologies to account for direct and indirect emissions, carbon stock changes, and unique agricultural factors such as land use change and biological processes. The guidance enhances consistency, transparency, and usability of agricultural GHG data for decision-making and reporting.

The report explores how board directors perceive and advance climate action. While most recognise its importance and opportunity, competing priorities and knowledge gaps hinder progress. Local Chapters of the Climate Governance Initiative are shown to support action through resources, training, and peer networks across varied global contexts.

The GHG Protocol Product Life Cycle Accounting and Reporting Standard provides a globally consistent framework for companies to quantify and publicly report greenhouse gas emissions and removals associated with individual products across their life cycle. It enables informed emissions reduction strategies and supports performance tracking, supplier engagement, and product differentiation.

The Greenhouse Gas Protocol Corporate Standard provides a framework for businesses to quantify and report greenhouse gas emissions. It establishes standardised accounting principles, categorises emissions by scope, and offers guidance for setting organisational and operational boundaries. The Standard promotes transparency, consistency, and comparability in corporate GHG inventories.

This report outlines RIAA’s policy platform to strengthen sustainable finance in Aotearoa New Zealand. It recommends a national strategy, clearer ESG disclosures, taxonomy alignment with global standards, anti-greenwashing measures, Māori inclusion, human rights protections, and alignment with biodiversity and the Sustainable Development Goals.

This report updates the GHG Protocol Corporate Standard by introducing dual reporting for Scope 2 emissions—requiring both location-based and market-based methods. It defines Scope 2 accounting principles, emission factor hierarchies, and quality criteria for contractual instruments, aiming to improve transparency, accuracy, and comparability across energy markets.

The Corporate Value Chain (Scope 3) Accounting and Reporting Standard provides a consistent framework for measuring and reporting indirect greenhouse gas (GHG) emissions across a company’s value chain. It outlines 15 categories of Scope 3 emissions, offers guidance on boundary setting, data collection, and reporting, and aims to improve transparency, enable emissions reduction, and support strategic decision-making.

This report assesses cost-effective methods to reduce methane emissions from enteric fermentation, manure management, and rice cultivation. It outlines region-specific strategies and underscores the need for research, regulatory frameworks, and cross-sector collaboration to support implementation and scale-up of mitigation solutions.