Here ya go!! One of the 20th century's greatest scientists, George Washington Carver's influence is still being felt today. Rising from slavery to become one of the world's most respected and honored men, he devoted his life to understanding nature and the many uses for the simplest of plant life. He is best known for developing crop-rotation methods for conserving nutrients in soil and discovering hundreds of new uses for crops such as the peanut. Invention: peanut agricultural science Function: noun / crop rotation Definition: Carver’s scientific discoveries included more than three hundred different products derived from the peanut, some one hundred from sweet potatoes, about seventy-five from pecans, and many more including crop rotation.