On this day in history, we explore April 22nd, a day marked by significant events that shaped the world. From the discovery of Brazil by Portuguese navigator Pedro Álvares Cabral in 1500 to the signing of the Paris Agreement to combat global warming in 2016, April 22nd has witnessed both triumphs and tragedies. We'll look back at key moments in history, including the Treaty of Zaragoza, the Texas Revolution, and the first Earth Day celebrations. Join us as we uncover the fascinating stories behind this globally significant date.