Plant biologist Neelima Sinha's leaf study made the cover of this week's Science issue. Whether plants make complex, divided leaves like those of ferns or tomatoes instead of simple, single leaves ...

Scientists have determined how key developmental genes influence growth of cells to produce such differences in leaf form. The researchers were able to make thale cress, which typically produces ...

Steve Nix is a member of the Society of American Foresters and a former forest resources analyst for the state of Alabama. In palmately compound leaves, the leaflets form and radiate from a single ...