Last spring, we took an unconventional road trip. An NG photographer and I followed a truck of strawberries across the U.S. in three days, from California to Washington, D.C., to understand what it takes to deliver food grown thousands of miles away. The story appeared online, and in the November edition of National Geographic Magazine.
We received several questions about the trip, like why we chose to follow strawberries (they're a classic American food, agriculturally isolated, and extremely fragile) and whether the truck drivers knew we were behind them (yes, and they even slowed down for us).
But one question was more complex. From John Daly in Chelsea, Michigan:
"Why did the truck travel ...