Hans Adolf Krebs was a German-British biochemist who made significant contributions to the understanding of the citric acid cycle. Some synonyms for Krebs include Hans Krebs, Sir Hans Krebs, and Sir Hans Adolf Krebs. He was born on August 25, 1900, in Germany, and passed away on November 22, 1981, in Oxford, England. Krebs was also a Nobel laureate, having won the Nobel Prize in Physiology or Medicine in 1953 for his research on the intermediary metabolism of carbohydrates. Among his significant accomplishments, he discovered the Krebs cycle or the citric acid cycle, which is still a fundamental concept in the field of biochemistry.