by thenewgreen

A FEW YEARS ago Jeff Bezos made a prediction. By 2018 his e-commerce empire, Amazon, would be delivering items by drone. Prime Air has yet to launch. But startups are making progress—mostly in health care, where they are vying to tap into a lucrative, $70bn global market in health-care logistics. As they deal with regulators and investors, these firms are charting the course for other aerial deliveries.