Danish bioengineers have created a completely indoor crop field, using controlled LED lighting, temperature, humidity, air quality, and nutrition. Scientists at PlantLab, a private research company, have been working on these indoor farms for more than a decade and now plan on building a 14,000 sq. ft. building with four levels of vegetation. With around 3 billion hungry or malnourished people in the world, researchers are hoping that this could be a solution to the food production problem. “In order to keep a planet that’s worth living on, we have to change our methods,” says Gertjan Meeuws, a PlantLab researcher.