Molecular clock

By studying tissues from deceased people, a team found that women have more rhythmical gene expression and that this molecular rhythmicity decreases with age.

The discovery that a group of cell-infecting bacteria lived roughly 2 billion years ago stirs a longstanding controversy around which came first: phagocytosis or mitochondria.

A study of 19 postmenopausal women found that eating a bar of chocolate in the morning affected their bodies differently than eating it at night, but neither led to weight gain.

Two studies show that Plasmodium—the genus of protozoans that cause malaria—have an internal sense of time that synchronizes with their host’s circadian rhythms and allows the parasites to collectively attack blood cells.

A clock constructed of rDNA methylation sites can estimate both chronological and biological age across species.

In Drosophila, the tissue is more permeable to drugs at night, offering a possible explanation for why some medicines work better at certain times of day.

Using brain scans and methylation markers, scientists develop ways to assess neurologic aging in humans.

Metabolites produced by gut microbes in mice can affect the animals’ circadian rhythm and metabolism. 

The timing of meals affects the levels of lipids in the livers of mice, according to a study.

Why eating at the wrong times is tied to such profound and negative effects on our bodies

Many of the body's tissues can tell time, and these peripheral clocks can be influenced by environmental cues, such as the timing of food consumption.

Raising one evolutionary question after another, Brandon Gaut has harvested a crop of novel findings about how plant genomes evolve.