Life's rhythms

While our "body clock" regulates our 24 hour daily routine, a woman's menstrual cycle follows a 30 day rhythm. Many marine animals, such as the worm Platynereis, synchronize their reproduction rhythm with the lunar cycle. ...

Clockwork plants

(PhysOrg.com) -- How do plants tell the time and the passing of the seasons? Plant scientists are enlisting the help of engineers in their quest to uncover the rhythms of circadian clocks.