China’s newest aircraft carrier heads to sea for first time
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U.S.-China talks start with warnings about misunderstandings
BEIJING >> The United States and China butted heads over a number of contentious bilateral, regional and global issues as U.S. Secretary of State Antony Blinken met Friday with Chinese Foreign Minister Wang Yi.
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Self-driving tractor-trailers heading for U.S. roads
Pittsburgh — On a three-lane test track along the Monongahela River, an 18-wheel tractor-trailer rounded a curve. No one was on board.A quarter-mile ahead, the truck's sensors spotted a trash can blocking one lane and a tire in another. In less than a second, it signaled, moved into the unobstructed lane and rumbled past the obstacles. The self-driving semi, outfitted with 25 laser, radar and camera sensors, is owned by Pittsburgh-based Aurora Innovation Inc. Late this year, Aurora plans to...