Deuterium, the heavy brother of hydrogen, is considered a promising material of the future because of its wide range of applications—in science, for energy generation, or in the production of pharmaceuticals. However, the extraction of deuterium from its natural isotope mixture has so far been complex and expensive. With a porous material developed at the Technische Universität Dresden, this could soon be done more efficiently and cost-effectively. The new method has now been published in the scientific journal Science Advances.