[mhking]

What a shame that 90% of blacks would know either one (Carver) or none.

Not true. They wouldn't know them all, but to say that they'd only know one is a misnomer.

[DeepDish]

"FREDERICK MCKINLEY JONES (1893-1961) This World War I veteran is most remembered for introducing the first practical refrigeration system for trucks and railroad cars, a system that completely changed the food transport industry. Jones was responsible for a phenomenal 60 patents during his lifetime, 40 for refrigeration equipment alone."

A guy like this is worth 5 Nobel Prize winners in medicine. why? Because his inventions provide the basis of the veggie aisle in every grocery store in the US. This improves the health of the population and a healthier population is more disease resistant.