In 2008, hollow glass microspheres made their public debut to the materials world. The tiny glass microballoons, developed at Savannah River National Lbs were under scrutiny for a wide variety of potential applications. The glass microspheres are unique and incredibly useful because of their hollow interior and the porosity of their walls - which allow solids, liquids and gases, stored in the hollow interior, to pass through the microspheres walls and be released and delivered on demand. Then, in August 2016 other intriguing possible applications for the microspheres resulted in anti-counterfeiting strategies. And now, nearly a decade after their initial introduction, porous wall, hollow glass microspheres are diving into another incredibly lucrative market - that of medical applications. A patented technology has recently been granted to SpheroFill LLC, a startup company focusing on biomedical applications of the microspheres.