Nate Hagens would define "warm data" as the nuanced, context-rich information that captures the interconnectedness of systems, behaviors, and relationships beyond mere quantitative metrics. He emphasizes that unlike 'cold data', which is purely numerical and often devoid of situational context, warm data integrates qualitative dimensions, revealing the subtleties and complexities of real-world phenomena. For Hagens, warm data is crucial for understanding the deeper, often unseen layers of human and ecological systems, enabling more holistic and adaptive decision-making. He argues that this type of data is essential for navigating the intricacies of sustainability, resource management, and societal transitions, as it provides a more comprehensive and empathetic view of how various factors and stakeholders interplay within our biosphere.

See also: climate change, fossil fuel, ecological footprint, renewable energy, nuclear power