From immortal hydras to everyday mutts, animals are helping researchers decode — and combat — aging.
David Zarley is a Senior Staff Writer at Freethink. He is a freelance journalist covering health and medicine, with a focus on infectious disease, psychedelic research, mental health, and the brain. His work has been featured in notable publications such as The Atlantic, The Verge, Jezebel, Frieze, Sports Illustrated, VICE, and Paste Magazine.



