A relatively new medical discipline, nuclear medicine is a subspecialty of radiology that utilizes radioactive pharmaceuticals to diagnose and treat diseases. An important component of nuclear medicine is imaging. Whereas imaging technologies like X-rays pass external radiation through the body to form an image, nuclear medicine imaging relies on the detection of radioactive emissions released by radiopharmaceuticals that have been introduced into the body. What is the ALARA principle?
Ralph Waldo Emerson
Back in the day
Dreamland was, for a brief time, one of the many attractions in Coney Island—a popular New York seaside resort area. An amusement park, Dreamland featured rides and exhibitions of curiosities, including caged animals, and, more bizarrely, a display of premature infants in incubators. In 1911, a fire sparked by light bulbs ripped through the largely wooden park, creating chaos as animals escaped. Fortunately, the babies were carried to safety, and no one was killed. What became of Dreamland?
Born on a day like today
An American author and social reformer, Howe wrote and lectured on behalf of women's suffrage, African-American emancipation, and other causes and helped found a world peace organization. In November 1861, after watching Union troops march into battle during the US Civil War, she wrote "The Battle Hymn of the Republic," her most famous work. Published in February 1862 in The Atlantic Monthly, it became the semiofficial song of the Union Army. Where did the music for the song come from?