A congenital heart defect (CHD) is a flaw in the structure of the heart and great vessels of a newborn. Most CHDs either obstruct blood flow to the heart or nearby vessels or cause blood to flow through the heart in an abnormal pattern. Though such defects occur in less than 1% of the population, they are the leading cause of birth defect-related deaths. There are 8 defects that comprise the bulk of all CHDs, with ventricular septal defects presenting most commonly. What is the septum?
Back in the day
Developed by Germany during WWII, the Vergeltungswaffe 2 (V-2) Rocket was the world's 1st modern ballistic missile. It was unmanned, internally guided, and traveled at supersonic speeds that allowed it to reach its target in silence. Mass production of the V-2 began in 1943 at the Mittelbau-Dora slave labor camp, and between 1944 and 1945, England and Belgium suffered numerous V-2 rocket attacks that killed thousand of civilians. What does Vergeltungswaffe mean?
Born on a day like today
Richard the Lionheart reigned from 1189-1199. He rose to the throne of England following Henry II's death, and set out on the Third Crusade shortly after his coronation. Richard captured Cypress and Messina while en route to Jerusalem. Unable to capture the strongly fortified city of Jerusalem, Richard negotiated a treaty with Saladin that allowed Christian pilgrims access to Jerusalem's holy sites, and started his journey home. How much time did Richard spend in England during his entire reign?