Speech Techniques: Avoid Saying ‘Um,’ ‘Ah,’ or ‘You Know’

A woman practicing her speech.

As the saying goes, "Words spoken are like water spilled," which can not be taken back. Speaking is an art. (Image: Fizkes via Dreamstime)

Scientists Discover an Evolutionary Oddity That Led to the Human Voice

Two girls talking.

Scientists believe evolutionary changes in the human voice box aided our ability to have long and stable speeches. (Image: Goldenkb via Dreamstime)

The Fascinating Human Speech Mechanism That Turns Air Into Speech

Human speech.

Have you ever wondered how the human speech mechanism works? (Image: Screenshot via YouTube)