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 ...

It's summertime, and the fields of Yolo County, Calif., are filled with rows of sunflowers, dutifully facing the rising sun. At the nearby University of California, Davis, plant biologists have now ...

You may have noticed that some sunflowers face a different direction by the end of the day. Sunflowers can grow in all 50 states. They thrive in environments where they can receive six or more hours ...

Add Yahoo as a preferred source to see more of our stories on Google. It's an elaborate dance of hormones, sunshine, genes and bees It may not surprise you that sunflowers have something of a thing ...

It is one of the great symbols of summer: a sunflower (Helianthus annuus) bending to track the path of the Sun from east to west, straining to make the most of each day. At night, the sunflower eases ...