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Amazon’s fashion ambitions go back several years, and the company has struggled to break into the market in the past.?In 2012,?Amazon shut down Endless.com, a five-year-old high-end online fashion site that sold accessories. Last year,?Amazon-owned MyHabit faced the same fate.?

American chemical engineers have developed a new sensor that allow them to see inside cancer cells and determine whether the cells are responding to a particular type of chemotherapy drug.

Among them, Baoding city in Hebei, about 140 kilometers southwest of the capital, boasts the best achievement, with its average concentration of PM 2.5 during the period lowered to 53 micrograms per cubic meter, falling by 36.1 percent from the same period of 2018, according to the report.

American Airlines, the nation's largest, said Tuesday, it plans to lay off about 19,000 workers starting Oct 1 when federal aid runs out. Delta Air Lines, the No 2 carrier, said it plans to furlough about 2,000 pilots.

Amazon’s e-commerce dominance has caused many physical retailers to close stores, but the company is now ironically expanding its own physical retail footprint, ranging from?its Whole Foods acquisition?to the?Treasure Trucks?to bookstores?to?Amazon Go. This week Amazon debuted its newest store concept,?Amazon 4-star, which stocks items with a rating above four stars on Amazon.com, as well as best-sellers and new and trending items.