We Used To Have 307 Kinds Of Corn. Guess How Many Are Left?

see link abohttp://www.upworthy.com/we-used-to-have-307-kinds-of-corn-guess-how-many-are-left

Answer: 12

See the link to see how several other common foods have drastically shrunk in variety. This is important because decreasing the gene pool like this increases the danger that a disease will wipe out a food crop. More varieties increases the chances that some will be resistant.