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Andrew Ng, co-founder of Coursera and former chief scientist at the Chinese company Baidu, tweeted on Tuesday: "Kudos Mark Zuckerberg for speaking out against AI fear mongering."

And neither is the billion these tourists spend annually in New York City that supports about 300,000 jobs. More than 67 million were expected this year, about one-fifth of them from outside the United States－perhaps as many as 2 million from China.

And this is worthy of primary, rather than secondary, consideration - now and in the years to come.

Analysts have estimated that Boeing will spend at least billion to return the Max to service. Costs include compensation to airlines for lost revenue due to the grounding of the jet, out-of-court settlements with family members of those killed in the crashes as well as the cost of storing new but undelivered aircraft and returning grounded planes to the air.

An operation aimed at fighting organized and cross-borders crime simultaneously took place in Guangdong, Hong Kong and Macao special administrative regions on May 22 and 23.