TWO paper by Sir Francis Darwin (Proceedings of the Royal Society, B, vol. Ixxxvii.) mark an important advance in the study of the process of transpiration in plants. Hitherto, although transpiration ...

Pexels Walk into any well-stocked garden center and you’ll notice something almost immediately: the air feels different.

Dear Jessica: Can you please tell me what these droplike things are on the leaves in the picture? If it’s a disease, how do I treat it? — Marilyn Von Braunsberg, Oceanside Dear Marilyn: Those sticky ...