As the third director of the Carnegie Institution of Washington?s Department of Embryology, George Washington Corner [5] made a number of contributions to the life sciences as well as to administration. Corner was born on 12 December 1889 in Baltimore, Maryland, near the newly established Johns Hopkins University [6]. Although Corner was not exposed to science much in school at a young age, he ...

Stafford Leak Warren studied nuclear medicine in the United States during the twentieth century. He used radiation [3] to make images of the body for diagnosis or treatment and developed the mammogram, a breast imaging technique that uses low-energy X-rays to produce an image of breasts. Mammograms allow doctors to diagnose breast cancer in its early and most treatable stages. Warren was also a...