Scientists also need an efficient way to recover and recycle the special hydrogen fuels used inside fusion reactors. Now, researchers have developed a promising new method for separating these fuels using a silver-containing material called a zeolite. Fusion reactors mainly use two forms of hydrogen, called deuterium and tritium. It is the first time researchers have successfully separated a mixture containing all three hydrogen isotopes using a porous solid material. While the technology is still in the early stages, the findings represent an important step toward building practical fusion fuel recycling systems.