Sarah Al-Rashid (b. 1983, Riyadh) is a Saudi-born chronobiologist and science writer whose research explores artificial light at night, ecological physiology, and how societies apportion time. She studied biology at King Saud University, earned an MSc in neuroscience at University College London, and completed a PhD in integrative biology at the University of Glasgow, where she used actigraphy and spectroradiometry to study melatonin rhythms in shift workers and urban bats.
Al-Rashid has advised DarkSky International and collaborated on field campaigns using NOAA VIIRS night-light data across the Arabian Peninsula and North Atlantic. A former lecturer at Sultan Qaboos University, she now directs the Night Ecology Lab at the University of Exeter's Penryn Campus, where her team investigates spectral ecology, chronomedicine, and policy solutions for 24/7 cities. Her essays and reported features appear in Nature and Aeon, and her narrative science writing bridges chronobiology with urban planning, cultural history, and environmental ethics. She is the author of The Midnight Garden (2025) and other works on the biology of darkness and the politics of time. Al-Rashid divides her time between Cornwall and Muscat.
