An evolutionary "trap" has haunted crested and marbled newts for 25 million years: Leiden researchers have uncovered a mysterious DNA error that should not be able to arise—yet persists all the same.

This article explores how the role of regulatory T cells in immunological self-tolerance evolved from skepticism to Nobel ...

Humans are far closer to meerkats and beavers for levels of exclusive mating than we are to most of our primate cousins, ...

Vitamin B12 deficiency can be caused by poor diet or malabsorption, leading to fatigue, muscle weakness, and memory problems.