Step by mechanical step, dozens of humanoid robots took to the streets of Beijing early Saturday, joining thousands of their flesh-and-blood counterparts in a world-first half marathon showcasing ...

But NASA's oldest serving astronaut Don Pettit became a septuagenarian while hurtling towards the Earth to wrap up a seven-month mission.

As the Trump administration attempts to choke off exports of strategically important computer chips to China, experts say the effort might backfire.