TED Talks
Ted: Ted Ed: Astatine: Periodic Table of Videos
The team at Periodicvideos has created a TED-Ed Lesson for every element of the periodic table. Because of its radioactivity and short half-life, astatine is an element few chemists come into contact with. [0:34]
Other
Los Alamos National Labs: Astatine
Basic statistics, history, and properties of the halogen element, astatine.