Roughly one-third of all food is wasted – in fields, during transport, in storage, and in homes. But there are easy, inexpensive ways to prevent waste. Initiatives like Love Food, Hate Waste offer consumers tips about portion control and recipes for leftovers, while farmers in Bolivia are using solar-powered driers to preserve foods.

Melanie Stetson Freeman/The Christian Science Monitor
The Westside Market, a grocery store, displays bright produce outside with handmade signs advertising prices, in May, on the Upper West Side in Manhattan, New York. In the US, produce is frequently thrown away. Grocers discard produce after stocking too much of it in order to make appealing displays.