Learn about the history of science by reading about the significant scientific events that took place on this day in history.
1981 - Hans Adolf Krebs died.Krebs was a German biochemist who was awarded half the 1953 Nobel Prize in Medicine for his discovery of the citric acid cycle. The citric acid cycle, or Krebs cycle is a series of chemical reactions in the cell that breaks down food molecules into carbon dioxide, water, and energy. He also discovered the urea cycle where urea is produced from ammonia in the liver.
1917 - Andrew Fielding Huxley was born.Huxley is an English physiologist who shares the 1963 Nobel Prize in Medicine with John Carew Eccles and Alan Hodgkin for their discoveries and research involving nerve cells. Huxley and Hodgkin's research involved nerve action potentials. These are the electrical signals that enable a nerve's coordination with the central nervous system. They hypothesized the existence of ion channels that transport the actual nerve signal that would be discovered in the 1970s.
1907 - Asaph Hall III died.
Hall was an American astronomer who discovered the two moons of Mars, Phobos and Deimos. He worked for the US Naval Observatory and determined the orbits of several planet's satellites and the rotation rate of Saturn.