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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 initiative called Bird Names for Birds hailed the change while saying that 149 other eponymous bird names in North America alone need to be reviewed, and some say all of them should be changed.

Among these companies, 478 have completed 642 buybacks, with the total amount topping 23.6 billion yuan.

An international wine education project Fan has prepared for two years will be launched at the wine school of the University of Bordeaux sometime this year.

An equestrian puts on a display of traditional horsemanship skills during the Shoton Festival, commonly known as the Yogurt Festival, in Lhasa, Southwest China’s Tibet Autonomous Region, Aug. 13, 2018. Equestrians performed ten kinds of stunts while riding a horse, including archery and toasting. [Photo/ China News Service]