We’re learning more about the differences in health between early risers and night owls, and new research could offer even more evidence that vaping is just different from smoking, not necessarily better.

Howcast - Learn what insomnia is from sleep specialist Priyanka Yadav, D.O. in this Howcast video.

Discover the true story of Thomas Edison, beyond the myths of the lone genius. Learn about Edison's brief formal education, his self-driven learning, and the crucial role of his mother, a teacher. Examine the myth of his minimal sleep...

This video provides an overview of basic sloth facts, including their physical characteristics, sleep habits, eating habits, and behavior on the ground. It also includes footage of a newborn sloth being hand-reared and cared for by...