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An American flag flies outside the New York Stock Exchange. Stocks are off to a mostly lower start on Wall Street on May 31, after the US imposed tariffs on EU steel and aluminum products. [Photo/IC]

An increasing number of white-collar workers in Shanghai are getting failing grades on their physical examinations, according to a white paper on the health of white-collar workers in Shanghai.

An Xfinity DVR sample screen. (Xfinity Photo)

Amongst us book lovers, there’s almost a special code when you meet another reader — we talk about our favorite bookstores. This year’s celebration of Independent Bookstore Day on August 29 feels especially weighty, as a result, as so many independent booksellers around the country fight for their survival and wonder what their future may hold. No one goes into the book business expecting an easy path, and each year typically brings its share of surprises and challenges. This year, of course, is like none other in memory. We are all climbing the mountain ahead of us, but the outcome is uncertain.

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.