Phenology is the study of recurring plant and animal life cycle stages, or phenophases, such as leafing and flowering of plants, maturation of agricultural crops, emergence of insects, and migration of birds. Many of these events are sensitive to climatic variation and change, and are simple to observe and record.
Polychlorinated biphenyls (PCBs) are a group of manmade chemicals. They are oily liquids or solids, clear to yellow in color, with no smell or taste. PCBs are very stable mixtures that are resistant to extreme temperature and pressure.
Center for Wooden Boats (CWB) is a hands-on museum devoted to preserving the rich heritage of Pacific North West Region in the US. It is located on the shores of South Lake Union in Seattle. Its main goal is to offer learning experience through a hands-on approach.