ALBUQUERQUE, N.M. (AP) -- On a patch of tribal land in western New Mexico, a company plans to build a $160 million state-of-the-art greenhouse for researching and growing medicinal plants, including marijuana.

On the eve of a vote that could legalize recreational marijuana in Massachusetts, a Colorado company is preparing to build the state’s largest marijuana greenhouse, a sprawling, high-tech complex that could eventually expand to nearly 1 million square feet.

A marijuana cultivator that's been called the "Tesla of cannabis" is bringing the industry out of the darkness and into the light — literally.

A greenhouse industry expert looks at whether it is better to retrofit existing greenhouses, or to purpose-build greenhouses for marijuana growing.