Big History, the field that studies the entire known past of our universe to give context to human existence, has so far been the domain of historians. In A Most Improbable Journey, Walter Alvarez-best known for his ” Impact Theory” explaining dinosaur extinction-makes a compelling case for a new, science-first approach to Big History. He brings a scientist`s view to the human story, from the creation of our universe & our planet, the rise of life, the movement of our continents & its effect on human migration, to humanity`s ascendance. Alvarez`s observations & stories will give readers a new appreciation of the events that have led to the human situation. Through entertaining, bite-sized chapters, A Most Improbable Journey will send readers out in a thousand directions to learn more.