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Among first-tier cities, it said rides in Beijing rose by 188 percent, the biggest increase, followed by Shenzhen at 107 percent. Shanghai saw a rise of 94 percent, while Guangzhou recorded an increase of 81 percent.

Amazon’s newly published patent envisions a fleet of airships that would monitor delivery drones. (Amazon Illustration via USPTO)

Among the total 5G commercial contracts, nearly half of them are from Europe, with 32 in total, and 11 from the Middle East, 10 from Asia-Pacific, seven from the Americas and one from Africa.

Amid public outcry over the surge in lung illnesses, multiple states have been cracking down on vaping in recent weeks. New York, Michigan and Rhode Island all have banned the sale of flavored vaping products, while Massachusetts has imposed a four-month ban on sales.

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.