New findings on the internal clock of the fruit fly

Most living organisms have an internal clock which, among other things, controls the sleep-wake rhythm. The internal rhythm lasts approximately one day (circadian), i.e. about 24 hours, and is regulated by means of various ...

The chemical that tells plants when it's time to sleep

Each of us goes through a daily cycle. We wake up, spend the day eating, working and playing, and then we sleep. Messing with this cycle by not sleeping, doing shift work, travelling to a different time zone or living where ...

Sunflowers move by the clock

It's summertime, and the fields of Yolo County are filled with ranks of sunflowers, dutifully watching the rising sun. At the nearby University of California, Davis, plant biologists have now discovered how sunflowers use ...

Research shows bees might create cognitive maps

(Phys.org) —How do bees find their way home? Until now, scientists thought bees navigated by calculating their position relative to that of the sun. Randolf Menzel of the Free University of Berlin and colleagues tested ...

Scientists pinpoint link between light signal and circadian rhythms

In a new paper published this week in the Proceedings of the National Academy of Sciences, Aziz Sancar, MD, PhD, the Sarah Graham Kenan Professor of Biochemistry and Biophysics in the UNC School of Medicine, and his colleagues ...

Top cock: Roosters crow in pecking order

Roosters crow in order of seniority—the top cock announcing daybreak while juniors patiently wait their turn, said a study Thursday which revealed a long-guarded secret of chickendom.

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