At 9 p.m. Eastern time on July 10, Amazon initiated its annual show of force: Prime Day, a 30-hour exercise in the fullest possible expression of what Amazon can do.

E-commerce retailers today aren't just focusing on the products they sell. They're also paying close attention to the boxes they come in.

There's a farm opening soon in Laurel, Md., that can grow strawberries in January. It could grow rare tropical fruits from Asia and Central America on our native soil. It could produce custom-designed lettuce, more peppery or sweet. It's a hydroponic farm in a shipping container, and its owners hope it could eventually put an end to food deserts, including our biggest one: outer space.

Nevada officials have declared a state of emergency over marijuana: There's not enough of it.