Ensuring healthy diets for an expected global population of nearly 10 billion people in 2050, while at the same time improving the world those people live in, will require sweeping changes to farming and how we produce food, according to a new report.

“There is a pathway to achieve this but the challenge is even bigger than any of us thought,” said Richard Waite of the World Resources Institute (WRI) and co-author of “Creating A Sustainable Food Future: Final Report.”

Agriculture already uses almost half of the world’s vegetated land. It consumes 90 percent of all the water used by humanity and generates one-quarter of the annual global emissions that are causing global warming. And yet of the