From moisture to electricity: Scientists show how kitchen items can power wearables and smart home devices

Queen Mary University of London researchers built a moisture-electric generator from gelatin, salt, and activated charcoal.

The device harvests ambient humidity to produce usable power and can be stacked for higher output.

It can sense breathing and touchless proximity, pointing to wearable and smart-home sensor uses.

Made from everyday ingredients, it biodegrades in soil within weeks and can be recycled by dissolving and recasting.