It might look like a comet or a shooting star, but this time-lapse video is actually a tiny plant root, not much thicker than a human hair, magnified hundreds of times as it grows under the microscope ...

Hair may grow in a completely different way than scientists once believed. Instead of being pushed out from the root, new ...

For many years, biology textbooks have explained hair growth in a simple way. They say that new cells form at the bottom of the hair root. As these cells divide and multiply, they push older cells ...