He fidgeted and air-conducted at his Super Bowl party. February 4, 2020, 6:26 p.m. 13 President Donald Trump (ANDREW CABALLERO-REYNOLDS/AFP via Getty Images) AFP via Getty Images ...

The songs were among four options offered by European scientists who asked volunteers to perform what some consider a nerve-racking activity: karaoke. Many participants smiled coyly, fidgeted and ...