On a spring morning, a search for a specific species of fern leads to a discussion on ancient plant history, vascular beauty ...

Tiny leaf buds are forming on the apple and dogwood trees in Chris Kuhlow’s Port Jefferson Station backyard, and leaves are appearing on his black raspberry bushes and lilacs. For 15 years ...

LONDON, March 27 (Reuters) - In the nuclear medicine department of London's University College Hospital, patients pass through polished corridors to airy rooms decorated with green-leaf stencils ...