Elon Musk appeared to sport a mysterious black eye at his Oval Office farewell with President Trump. The world's richest man ...

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Sunday in that bleak pandemic summer of 2020, the air near central California’s Big Basin Redwoods State Park felt muggy, almost tropical. Weird, thought naturalist Christian ...

School of Computer Science and Engineering, Xi’an Technological University, Xi’an 710021, Shaanxi, P. R. China ...