Musk Challenges Putin To ‘Single Combat’ Over Ukraine—Russian Official Calls Him A ‘Little Devil’

The War Puts Ukraine's Clinical Trials—and Patients—in Jeopardy

Astronaut Peggy Whitson says Russia's invasion should lead to more engine development in the US: 'We rely on Russian engines a bit more than we should.'

Would Putin Use Nuclear Weapons if the Ukraine Conflict Escalates? An Arms Control Expert Explains