Salmon in tanks, lettuce under glass disrupt the food chain

The lettuce, spinach and other leafy greens also are out of place.

A 3-acre greenhouse, nearly twice the length of a football field, glows purple from its more than 1,100 LED grow lights — a sight that turns the heads of passing motorists on Interstate 94 at night. The lights, with cloud-based software, help mimic California’s Salinas Valley.

Next door, the North Atlantic Ocean is replicated in a one-acre fish house. Thousands of Atlantic salmon, some newly hatched from eggs sourced in Iceland, others nearly 10 pounds after two years, are raised in 22,000-gallon tanks filled with fresh water drawn from a 180-foot-deep well....