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An autonomous sense-and-avoid navigation system keeps the drone?from running into other objects on the way to its destination, at an altitude of up to 400 feet.?Researchers at the Massachusetts Institute of Technology showed off a sense-and-avoid system last month, but that one was designed to handle obstacles at a mere 30 mph?– half the speed that’s built into Amazon’s specs.

An app from Chinese discount online retailer Vipshop is seen on a mobile phone Oct 26, 2017. [Photo/VCG]

An Associated Press photographer on the scene saw at least one person lying motionless on the Manhattan bike path.

An IMF research note said: "These firms would thus be responsible for doing what they do best — innovating and interfacing with customers. The central bank, instead, would provide trust to the system by requiring that coins be fully backed by central bank reserves, and by supervising the coin issuers. At the same time, this limits costs for the central bank, as well as some of the risks."

An officer from Anhui provincial meteorological service center was quoted saying that the names of typhoons are released into the public and can be used by them, but choosing the name of a typhoon that has caused heavy loss is somehow against morality.