When a man gives you sunflowers, it's a sweet gesture, but there's more to these blooms. Discover the special meaning behind ...

This sun-tracking behavior , known as heliotropism , is most evident in young sunflower buds and usually diminishes as the flower matures, with mature sunflowers generally facing east ...

Real flowers do it, and even the Beatles did it. [Robo Hub] now has a plastic sunflower that tracks the sun using, of course, an Arduino. It may not qualify as a real robot, but it does mimic a ...