M. Johnston

TL;DR: It is shown that tremendous progress could be made by halting agricultural expansion, closing ‘yield gaps’ on underperforming lands, increasing cropping efficiency, shifting diets and reducing waste, which could double food production while greatly reducing the environmental impacts of agriculture.

TL;DR: A global-scale assessment of intensification prospects from closing ‘yield gaps’, the spatial patterns of agricultural management practices and yield limitation, and the management changes that may be necessary to achieve increased yields finds that global yield variability is heavily controlled by fertilizer use, irrigation and climate.

TL;DR: It is found that a relatively small set of places and actions could provide enough new calories to meet the basic needs for more than 3 billion people, address many environmental impacts with global consequences, and focus food waste reduction on the commodities with the greatest impact on food security.

TL;DR: In this paper, the authors examined both the magnitude and spatial variation of new agricultural production potential from closing of 'yield gaps' for 20 ethanol and biodiesel feedstock crops.

TL;DR: An examination of the potential emissions and air quality benefits of shifting freight from truck to rail in the upper Midwestern United States using a novel, freight-specific emissions inventory and three-dimensional Eulerian photochemical transport model to quantify how specific freight mode choices impact ambient air pollution concentrations.