Biologists drove the divergence of different-sized feather lice from a single population. In four years, the evolved lice had trouble mating with each other -- a sign of speciation. A few years ago, ...

Lice are typically grayish-tan in color and the size of a sesame seed or smaller, depending on where they are in their life cycle. Lice eggs look similar to dandruff and attach to the hair shaft. It’s ...

There are different types of lice. The type you have depends on the part of your body that’s affected: Head lice affect the scalp. Pubic lice (also called “crabs”) affect your genital area. Body lice ...

Human lice evolved alongside early humans, adapting to changes like reduced body hair and the development of clothing. While head lice primarily cause discomfort, body lice can transmit serious ...