Thursday, Oct 29, 2026
4:00 PM to 5:00 PM CET
Outdoor lighting has a default setting: more, brighter, bluer. DarkSky International CEO Ruskin Hartley makes the case that this default is failing wildlife, energy budgets, and the night sky itself — and that better lighting, not more of it, is the fix.
Drawing on DarkSky’s Responsible Outdoor Lighting at Night (ROLAN) principles, this session shows how five simple rules — useful, targeted, low-level, controlled, and warm-colored — translate into real specification decisions, with examples of what happens when they’re ignored, and applied.
Learning objectives:
CEO and Executive Director,
DarkSky International
Ruskin Hartley is CEO and Executive Director of DarkSky International, the leading global authority on light pollution and its impacts on wildlife, energy use, access to the night sky, and human wellbeing. He leads DarkSky’s mission to ensure everyone has equitable access to dark skies and quality outdoor lighting, working with volunteer leaders, chapters, and donors worldwide. Before joining DarkSky, Ruskin spent two decades in conservation leadership, serving as executive director of Save the Redwoods League and of Heal the Bay, and as vice president of resource development at Fair Trade USA.
Originally from the United Kingdom, he holds a bachelor’s degree from the University of Cambridge and a master’s degree from the University of East Anglia. Ruskin loves to head out on the trail with his wife and kids, or cook dinner under the stars.
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