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Among the joint efforts is the newly formed China-Africa Environmental Cooperation Center, based in Nairobi, a promising antipollution project, Liu said.

Amazon’s Treasure Truck is now in 11 U.S. cities. (Amazon Photo)

Amazon’s aggressive strategy to beat out a competitor a decade ago came back to haunt the company Wednesday in a Congressional hearing with CEO Jeff Bezos and other tech leaders.

Amjad Aref, a professor with the University of Buffalo's Institute of Bridge Engineering, said they should have been "a big red flag.""Bridges are really very vulnerable when they are under construction, when there are just pieces," he said.

Amid rampant protest violence in Hong Kong, criminals may take advantage of the understaffed police force to commit illegal acts, said Tsang Chung-bun, assistant district commander for Yau Tsim district in Kowloon West Regional Headquarters. Tsang called on members of the public to rebuild their trust in the police force and work more closely to quell violence.