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Amazon’s delivery drones will be able to?fly up to 20 miles at speeds faster than 50 mph, and find?their landing spots?via?symbols that customers will print out on their computers and place outside.

Among 654 frontier, top-level scientists across the world in the survey, about 1.8 percent chose Shanghai as their first choice for a place to work, followed by Beijing, Hong Kong, Shenzhen and Hangzhou.

Amazon’s digital assistant Alexa is getting more skillful by the day.

Among the problematic vehicles, 279 have been sold to customers and 29 are currently in the dealers' inventory. The wrong parts need to be replaced to eliminate the risk, the statement said.

Amid domestic and overseas opposition, the Trump administration has threatened to slap additional duties on Chinese goods worth 100 billion dollars, after proposing steep tariffs on Chinese imports worth billion.