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Boeing announced on Thursday that up to 50 of its popular 737NG planes had been grounded after cracks in them were detected.

Bloomberg came to a similar conclusion, saying the data confirmed the trend of a gradual domestic recovery from the contraction in the first quarter and backed up the Chinese government's stance on policy stimulus.

Booker and Harris could face questions about their own pasts. Harris has been criticized for her civil rights record when she was California's top prosecutor. In a preview of possible debate fireworks, Biden recently took a swipe at Booker's civil rights record as mayor of Newark, New Jersey.

Blackberry said on Wednesday it will continue testing its self-driving concept car on the road in Ottawa. The Canadian province of Ontario, which allows autonomous vehicles on roads only if there is a human driver behind the wheel, has said it would follow the Arizona investigation and take "action if warranted".

Bilateral pact to boost economic, trade cooperation between nations