The Arithmetic of Sustainability - Part 1: The Power of Proof

The Arithmetic of Sustainability ← Series Home The initial step in tackling the formidable challenge of moving away from fossil fuels is to calculate precisely the sheer scale of the problem: determining the total energy we consume. The current sustainable energy discourse is often mired in emotion and “twaddle,” obscuring the fundamental numerical challenge ahead. To create viable strategies rather than “pipedreams,” we must quantify our energy use—the “red stack”—and compare it directly against potential sustainable production—the “green stack.” ...

The History of Illumination

The Secret Life of Ordinary Objects - Part 11: The Language of Light: How Illumination Shaped Civilization

The Secret Life of Ordinary Objects ← Series Home From Fire to LED: How the Conquest of Darkness Transformed Civilization For most of human history, the setting sun ended productive activity. Darkness was a fundamental constraint on human life—a time of danger, rest, and limited visibility. The conquest of darkness, through increasingly sophisticated lighting technologies, represents one of humanity’s most transformative achievements. ...