Not sure which type of planting system you need? (plantsonwalls.com)
It gets two or three times as much electric energy out of their natural gas, or whatever fuel, as we typically manage with our central power plant system. (realclimate.org)
Early on, I realized that specializing in plant systems might narrow my chances for future employment because of the relatively smaller number of academic positions and biotechnology companies devoted to plant research. (sciencemag.org)