This episode explores the historical significance of May 20th, marking events that have shaped our world. From the first hydrogen bomb test in 1956 to the signing of the Metre Convention in 1875, this day has witnessed both groundbreaking scientific advancements and pivotal moments in history. We'll also uncover the fascinating stories behind the patent for blue jeans with copper rivets in 1873 and the discovery of the HIV virus in 1983. Tune in to discover the remarkable tapestry of events that unfolded on May 20th, leaving an unforgettable mark on human history.