Popular grocery staple could take hit as California faces major supply vulnerability

America's broccoli supply may have a geography problem.

More than 90% of fresh broccoli grown in the United States comes from California — leaving the popular vegetable's supply chain particularly vulnerable to drought, according to new research.

Cornell University researchers looked into how drought conditions in California could affect broccoli shipments and whether increasing production on the East Coast could help protect the nation's supply.

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