15-06-13 Often referred to as the body clock, circadian rhythm controls what time of day people are most alert, hungry, tired or physically primed due to a complex biological process that is not unique to humans. Circadian rhythms, which oscillate over a rou...

13-06-21 Human sleeping and waking patterns are largely governed by an internal circadian clock that corresponds closely with the 24-hour cycle of light and darkness. This circadian clock also controls other body functions, such as metabolism and temperature...

12-02-23 Sudden cardiac death -catastrophic and unexpected fatal heart stoppage -- is more likely to occur shortly after waking in the morning and in the late night. In a report in the journal Nature, an international consortium of researchers that includes...

12-02-14 In a study of the molecular underpinnings of plants' pest resistance, Rice University biologists have shown that plants both anticipate daytime raids by hungry insects and make sophisticated preparations to fend them off. When you walk past plants,...

12-01-11 New research at Oregon State University provides evidence for the first time that disruption of circadian（生理节律的） rhythms -- the biological clocks found in many animals -- can clearly cause accelerated neurodegeneration, loss of motor function...