one solution put forward is a method for growing food vertically in enclosed, self-contained domes that also have the potential to absorb co2 (and generate valuable carbon credits) and locally produce mineral and nutrition-rich vegetables and fruit aeroponically. one estimate i read recently says that a one acre greenhouse has the potential to grow up to 20 times the produce an acre of land will produce using traditional methods. since plants are not grown in soil, greenhouse facilities can be located almost anywhere. these facilities will greatly reduce the need to transport produce long distances (the average produce travels 1500 miles in the us and an apple in canada for example, is transported more than 2500 miles) and offer the potential to reap huge returns to investors participating in the right projects.

a few companies have taken up this challenge to produce healthy and i would be interested in learning more about who they are and how they are addressing the challenge to reduce food without the use of petroleum products (fertilizers, pesticides, herbicides, fungacides, etc.).