Several astronauts, including Americans, were allowed to return to the International Space Station after facing a potential evacuation amid a worsening air leak.

At one point today, NASA was preparing five crew members of the International Space Station to potentially evacuate as repairs were carried out on an air leak.

NASA and Russia's space agency Roscosmos, the station's two primary operators, have debated for months over the cause and potential fixes of small air leaks aboard Russia's Zvezda service module, a ke...