Nitrogen (N) is an essential macronutrient and a key structural component of macromolecules in plants. N nutrients and metabolites can act as signals that impact on many aspects of plant biology. The ...

Why do some 4- and 5-year-olds still nap like clockwork every afternoon, while other preschoolers start giving up habitual napping at age 3? It's a question many parents no doubt ponder and one that a ...

Though many of us have tried to block it out, we all remember puberty. First came the pimples and stretch marks. And next, feeling euphoric, awkward, and disoriented about growing from one life stage ...