The appetite for speedy package delivery is skyrocketing worldwide. Americans do more than 15% of their shopping online, with digital purchases of groceries, shoes, pet food and other goods quadrupling over the past decade to $1 trillion a year. Global e-commerce is expected to grow at more than twice the rate of offline purchases, and, by decade’s end, 25,000 packages will be shipped every second, according to an analysis by environmental group Stand.earth.
