The activation and inactivation mechanisms of a key protein involved in the circadian clock system of cyanobacteria -- an important organism in the evolution of such internal clocks -- have long ...

A new study of molecular interactions central to the functioning of biological clocks explains how certain mutations can shorten clock timing, making some people extreme 'morning larks' because their ...

The rotation of the Earth causes predictable changes in light and temperature in our natural environment. Accordingly, natural selection has favoured the evolution of circadian (from the Latin circa, ...