A single protein catalyzes site-specific DNA recombination upon blue-light illumination.

The bacterial pathogen Listeria monocytogenes requires respiration for the maintenance of cellular redox homeostasis.

Distinct local dynamics of different hypothalamus areas were detected in response to changing illuminance and could contribute to light’s impact on cognition.

Measurements of bar-headed geese flying in a wind tunnel in hypoxia reveal that these birds sustain aerobic flight at high altitude via a reduction in metabolism.

Cyanobacteria cope with both predictable day/night changes and natural fluctuations in light during the day by adjusting the expression dynamics of circadian-clock-controlled genes via a network of transcriptional regulators.

Neural stem cells in the dentate gyrus have unique cytoplasmic processes that promote privileged access to circulating factors by a unique contact point with an endothelial cell.

Diurnal variation loss of pineal allopregnanolone synthesis by light-at-night induces pituitary adenylate cyclase-activating polypeptide (PACAP) reduction and transcriptional PACAP repression in the cerebellum, with subsequent Purkinje cell death.

Diverse photographs of human faces against their natural background trigger a specific electrical response in the right hemisphere of the brain in infants aged 4–6 months.

Bioinformatic and biochemical studies provide evidence that covalently bound flavins are common and participate in wide-ranging extracytosolic redox activities throughout bacterial life.

Analysis of embryonic mouse diaphragm reveals muscle and nerve left–right asymmetries set by a Nodal-dependent genetic cascade, which imprints different molecular signatures to left and right motoneurons that shape their innervation pattern.