Since Darwin's time, the phenomenon known as flower constancy -- i.e., where insects consistently visit the same flower type even when many others are also present -- has been understood as a passive ...

Bold hues of red, orange, yellow, blue and purple help plants and animals communicate with their own species and others in their efforts to survive. Vivid orange dart frogs warn predators of their ...

DENVER — If your garden lacks color now, consider growing plants that put on a great fall show. Goldenrod produces sprays of bright yellow flowers. The bees love it. The variety I grow is "Crown of ...