appropriate by modern safety standards. There is a challenge to develop stable and durable actinide-bearing materials, which provide safe storage, use and final disposal. A key need is application of actinide solid solutions in durable crystalline host phases. Nuclear properties See also Actinides in the environment Lanthanides Major actinides Minor actinides Transuranics Notes References Bibliography External links Lawrence Berkeley Laboratory image of historic periodic table by Seaborg showing actinide series for the first time Lawrence Livermore National Laboratory, Uncovering the Secrets of the Actinides Los Alamos National Laboratory, Actinide Research Quarterly Periodic table