share: digg facebook twitter The perfect crop field could be inside a windowless building with meticulously controlled light, temperature, humidity, air quality and nutrition. "In order to keep a planet that's worth living on, we have to change our methods," says Gertjan Meeuws, of PlantLab, a private research company. To feed so many people may require expanding farmland at the expense of forests and wilderness, or finding ways to radically increase crop yields. Meeuws and three other Dutch bioengineers have taken the concept of a greenhouse a step further, growing vegetables, herbs and house plants in enclosed and regulated environments where even natural light is excluded. Meeuws says a building of 100 sq meters (1,075 sq.