The Great Horizon is a biographical novel on Sir Alexander Fleming, a Scottish biologist and pharmacologist. His best-known discoveries are the discovery of the enzyme lysozyme and the antibiotic substance penicillin from the mold Penicillium notatum, for which he shared the Nobel Prize in Physiology or Medicine in 1945 with Howard Florey and Ernst Chain.
Discovery of penicillin has come naturally as a life-giver to mankind. Disease-torn distressed humans have got a means of longevity through this life-saver. It has contributed in no less measure, to the average human longevity crossing the figure of seventies. The bright rays of the antibiotics have dispersed the dark clouds of sickness and diseases, which overcast the sky of human destiny. All this has been made possible due to the physician named Alexander Fleming who discovered it in 1928 and unfolded a new horizon.