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But a creative inventor has devised a solution. Using 3D printing technology, Zhao Qingming, 39, from Beijing's Haidian district, rigged up a set of contactless buttons for the lift in his 16-floor apartment building.

But increased sales of items customers may not have otherwise purchased — like an Instapot too heavily discounted to pass up — can drive a significant increase in single-use plastic and packaging. The environmental toll of online shopping also increases with shipping speeds, making it more difficult for delivery routes to be optimized and for items to be bundled together with less packaging.

But instead of packing up and heading home to the United States where he is confident he can find steady employment, the aspiring tattoo artist is adamant that China is where he needs to be in order to hone his craft.

But in the future, the software layer — which provides the intelligence running the cars, and the applications layer, which offers services and content to meet consumers' transportation needs — will collectively take up 60 percent of the value of a self-driving car, according to Morgan Stanley's estimates.

But developers won’t be getting Amazon’s free money without a little work. Apps will need to take advantage of some Fire-only features in order to qualify for Amazon’s bounty. Here are the requirements they’ll have to meet before Amazon will pay up: