fill an approximately 25-million-year gap in knowledge by reconciling the molecular clock—or pace of evolution—with the fossil spore record—the physical evidence of early plant life gathered by ...

Once nuclear power plants have reached the end of their nominal licensed operating life, they must undergo special safety reviews and ageing assessments of their essential structures, systems and ...

Home to a variety of plant life, including floating pond lilies, cattails, cypress, tamarack, and blue spruce, wetlands support diverse communities of invertebrates, which in turn support a wide ...

Once the soil is ready, scientists can introduce simple plant life. Building a global functioning atmosphere for human habitation will require the development of a complex ecosystem that may very ...