Albert de Richemond is a professional engineer and teaches physics at Lehigh Carbon Community College in Schnecksville, PA. He also investigates medical deviceaccidents and is an engineering consultant.Craig C. Freudenrich holds a PhD and has 10 years of teaching experience invarious sciences, including physics, biology, chemistry, anatomy, physiology, and astrobiology. He is currently a freelance science and education writer and serves as a science consultant in Durham, NC.