From the outside, the AeroFarms headquarters looks like any other rundown building in downtown Newark, N.J. It used to be a store, and more recently a nightclub. Now it's a test farm.
"My favorite is the mustard green that's called a Ruby Streak, which is this leaf right here," says AeroFarms CEO David Rosenberg, sampling some of the company's greens. "And my second favorite is cress, watercress, which is this guy right here."