Nature and EnvironmentDoing Your Bit: A hydroponic pyramid02:10This browser does not support the video element.Nature and Environment07/26/2019July 26, 2019An entrepreneur in Burkina Faso has developed a hydroponic device that combines plant production, aquaculture and poultry farming: the "agripyramid." It saves space, preserves the environment and produces high returns.Copy linkAdvertisement