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American Airlines, which flies the 737 MAX, said, "Boeing 737-800 pilots were required to receive some additional training on the MAX 8, which included an hour lesson on some differences. Additional training wasn't required, as the 737-800 and the MAX 8 have 'same type' certification."

Ammon's work could one day lead to new cancer drugs, because tumors almost always have an abnormal number of cancers.

Amazon’s fulfillment centers are typically sprawling, single-story warehouse-type buildings, taking up as much as a million square feet. But the patent application recognizes that such facilities are less likely to fly in urban environments.

Ambassador Liu concluded that Hong Kong-related issues bear on China's core interests. China will remain unwavering in its resolve to safeguard national sovereignty, security and development interests. The Chinese side urges the UK side to immediately stop meddling in Hong Kong affairs and stop interfering in China's internal affairs, so as to avoid going down the wrong path.

Amazon’s growing pains