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Amazon’s Jeff Wilke, CEO of the company’s Worldwide Consumer Business, made one of the biggest announcements of the week, unveiling a fully-electric drone that can fly up to 15 miles and deliver packages under 5 pounds in less than 30 minutes. Wilke also showed the array of different sensors that are built into the drones, in an effort to ensure safety during deliveries.

Amazon’s fulfillment centers are typically sprawling, single-story warehouse-type buildings, taking up as much as a million square feet. But the patent application recognizes that such facilities are less likely to fly in urban environments.

Amazon’s culture has been in the media spotlight since last summer, when?The New York Times published a widely read article about the company’s “bruising” workplace environment.

Amazon’s multimillion-dollar effort to deliver goods via drone?currently has just two customers in the English countryside, but this could well be the way a multibillion-dollar industry gets started.

Among the joint efforts is the newly formed China-Africa Environmental Cooperation Center, based in Nairobi, a promising antipollution project, Liu said.