What might Charles Drew have accomplished if he had not died in the car accident during his prime?

Why were the institutions in Europe more accepting of black students?

Why was it important to discover that the use of plasma was the most efficient way of transporting blood?

Why was Granville T. Woods able to obtain a patent on the electric lamp if Thomas Edison invented an earlier version?

How do George Washington Carver's discoveries affect agriculture today?

What was the author's purpose in mentioning the history of Julian's grandparents?

Why were scientists so eager to use soybeans in their experiments?