To solve these agro-food challenges, researchers are increasingly turning towards a systems approach. A systems approach argues that since we all eat, we all have a role in making the food system more sustainable. This means that the farmer doesn't bear sole responsibility for reducing the impact of greenhouse gas emissions on his farm. Fertilizer manufactures might work to find a way of lowering the embodied energy in their product. Similarly, the baker might help by agreeing to a lower protein content in the wheat, while the farmer might make sure to apply fertilizer only where and when its precisely needed.