A version of this article originally appeared in the Feed the Future newsletter.
In many developing countries, more than half of all fruits and vegetables are never eaten, but are instead lost to damage or spoilage after harvest. These post-harvest losses can mean that farmers need to sell their fresh produce immediately at whatever price they can get, before they lose the crops that represent investments of labor, water, and agricultural inputs. Improving how fruits and vegetables are handled after harvest can significantly prolong freshness — and cooling is key.
“The three most important aspects of postharvest handling are: temperature, temperature, temperature,” said Michael Reid, a postharvest specialist who works with the Horticulture Innovation Lab at the University of California, Davis. “In the developing world in particular, affordable cooling technology is mostly absent.”
Cooling can be an expensive challenge — even for American farmers.
As a farmer in upstate New York, Ron Khosla knew this problem too well. His vegetable crop was spoiling too quickly, but he could not afford to buy a walk-in cooler for his small farm. So he invented a solution: a small electrical device he called a CoolBot that tricks an air conditioner into getting colder without freezing over, turning a well-insulated room into a cold room for less than it cost to buy a refrigeration unit. Continue reading How one farmer’s invention is reducing food waste around the world