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Ukrainian authorities on Friday gradually restored power, aided by the reconnection of the country’s four nuclear plants, but millions of people were still in the dark after the most devastating Russian air strikes of the war. President Volodymyr Zelenskiy pleaded with Ukrainians to use energy sparingly. “If there is electricity, …

The Biden administration has banned approvals of new telecommunications equipment from China’s Huawei Technologies (HWT.UL) and ZTE because they pose “an unacceptable risk” to U.S. national security. The U.S. Federal Communications Commission said on Friday it had adopted the final rules, which also bar the sale or import of equipment …

NASA’s Orion spacecraft was placed in lunar orbit Friday, officials said, as the much-delayed Moon mission proceeded successfully. A little over a week after the spacecraft blasted off from Florida bound for the Moon, flight controllers “successfully performed a burn to insert Orion into a distant retrograde orbit,” the U.S. …