Environment

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posted: 28 June 2008 08:28 pm ET

: Bumblebee visiting nectar-rich flowers. Credit: Tom Ings.
: Aphids feast on the stem of a flower as ants keep a close eye on them to protect them from predators and keep them and their tasty honeydew secretions close by. Credit: Imperial College of London
: Most flowering plants bloom only bisexual flowers, but horsenettle blooms both male (left) and bisexual (right) flowers. Researchers at Duke University have discovered this curious combination boosts the overall amount of seeds the plant can produce. Credit: Mario Vallejo-Marin