A ground-based NASA team used Schlieren photography to capture and visualize the shock waves created by XB-1's supersonic flight.

NEO can now walk with a natural human gait and arm swings, squat down to pick things up from the ground and sit in chairs.

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This is the terrifying moment a woman and her dog entered a lift in Zhejiang, China on February 6, not realizing the dog's leash became stuck in the doors. As the lift elevator moves, the leash ...