What Is a Marine Heatwave? Definition, Causes, and Impacts
A marine heatwave is a prolonged period of unusually warm ocean temperatures that can disrupt marine ecosystems, fuel extreme weather, and affect human communities.…
Evidence library
Joaquimma Anna
Research, explainers and solution analysis for understanding change across a living planet.
264 resources
Operational Energy vs Embodied Energy in Buildings: A Lifecycle Perspective
Buildings consume energy both during operation (heating, cooling, lighting) and through the materials and construction processes (embodied energy). While operational energy has long been…
PFAS Short-Chain vs Long-Chain Compounds: A Definitive Guide
PFAS short-chain and long-chain compounds are distinguished by the length of their fluorinated carbon chain. Long-chain PFAS, such as PFOA and PFOS, have 8…
Why Freshwater Change Is More Than Water Consumption
Freshwater change encompasses shifts in water availability, quality, timing, and distribution driven by climate change, land use, pollution, and other factors beyond direct human…
Deforestation vs Forest Degradation: Key Differences and Why They Matter
Deforestation is the permanent conversion of forest to non-forest land uses, while forest degradation is the reduction of a forest's quality and capacity to…
What Is Sufficiency in Sustainability Policy?
Sufficiency in sustainability policy is a strategy that aims to reduce absolute resource consumption and demand to within ecological limits. It emphasizes 'enough' rather…
What Is Desertification? Definition, Causes, and Solutions
Desertification is the persistent degradation of dryland ecosystems by human activities and climatic variations, leading to the loss of biological productivity and the expansion…
Why Tipping-Point Timelines Are Difficult to Predict
Tipping-point timelines are difficult to predict because they involve complex, non-linear systems with multiple interacting feedback loops, incomplete data, and inherent uncertainties. Small changes…
Glacier Mass Balance Explained: How It Works, Why It Matters, and Key Facts
Glacier mass balance is the net gain or loss of ice on a glacier over a specific period, typically a year. It is the…
Green Bonds and Sustainability-Linked Bonds: Definitions, Mechanisms, and Impact
Green bonds are fixed-income instruments that earmark proceeds for environmental projects, while sustainability-linked bonds tie financial terms to the issuer's achievement of sustainability targets.…