Watch Jenna hold hands with Scarlett Johansson as they get their ears pierced
Scarlett Johansson and Jenna Bush Hager sealed their friendship by getting their ears pierced live on TODAY with Jenna & ...
Study: Hand clapping is akin to a Helmholtz resonator
A new paper published in the journal Physical Review Research provides experimental support for the hypothesis that hand clapping essentially acts like a Helmholtz resonator —akin to the hum generated ...