Arm flapping may signal that your baby is happy or excited. In other cases, it can be an early sign of autism spectrum disorder (ASD), a movement disorder, or some other health condition.

Mayor de Blasio got himself into a real Space Jam on Sunday when he was caught on video flapping his arms to a version of R. Kelly’s “I Believe I Can Fly” while visiting a church in South ...

Megan Joy leaves "American Idol" with her arms flapping. Published: ; Apr. 02, 2009, 1:58 p.m.

Mayor Bill de Blasio got himself into a real Space Jam on Sunday when he was caught on video flapping his arms to a version of R. Kelly’s “I Believe I Can Fly” while visiting a church in ...

Next time you go to Titan—one of Saturn's moons—remember this cool factoid: "The atmosphere is so thick and the gravity so low that humans could fly ...

On New Year's Eve, 11 years ago, I found myself running on a trail chasing a guy who started flapping his arms in the air like he was flying...which, as you can imagine, totally confused me. I had ...