Chinese biotech startup Magicpen Bio has created plants that glow in the dark, per EuroNews.

By splicing genes from fireflies and bioluminescent mushrooms, they genetically engineered some 20 plant species, including lilies, orchids, and roses, to emit visible light, a technical feat that reportedly took ~532 rounds of iterations to achieve.

Amid climate change and rising demand for energy, Magicpen founder Li Renhan says glowing plants could one day provide an electricity-free, cost-efficient way to illuminate cities around the world.